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A review of records and research actions for the poorly known Vanuatu Petrel Pterodroma [cervicalis] occulta Bird Conserv. Int. (IF 1.6) Pub Date : 2024-02-14 Peter M. Vaughan, Jeremy P. Bird, Vincent Bretagnolle, Hadoram Shirihai, Alan J. D. Tennyson, Colin M. Miskelly, Rohan H. Clarke
Summary Gadfly petrels Pterodroma spp. are among the most threatened bird taxa. Conservation interventions have been successfully developed and applied for some gadfly petrel species, but a substantial gap remains in conservation science for this group in the tropical Pacific Ocean. The Vanuatu Petrel Pterodroma [cervicalis] occulta is an ideal exemplar to develop a pipeline for conservation science
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Highly pathogenic avian influenza causes mass mortality in Sandwich Tern Thalasseus sandvicensis breeding colonies across north-western Europe Bird Conserv. Int. (IF 1.6) Pub Date : 2024-02-02 Ulrich Knief, Thomas Bregnballe, Ibrahim Alfarwi, Mónika Z. Ballmann, Allix Brenninkmeijer, Szymon Bzoma, Antoine Chabrolle, Jannis Dimmlich, Elias Engel, Ruben Fijn, Kim Fischer, Bernd Hälterlein, Matthias Haupt, Veit Hennig, Christof Herrmann, Ronald in ‘t Veld, Elisabeth Kirchhoff, Mikael Kristersson, Susanne Kühn, Kjell Larsson, Rolf Larsson, Neil Lawton, Mardik Leopold, Sander Lilipaly, Leigh
Summary In 2022, highly pathogenic avian influenza (HPAI) A(H5N1) virus clade 2.3.4.4b became enzootic and caused mass mortality in Sandwich Tern Thalasseus sandvicensis and other seabird species across north-western Europe. We present data on the characteristics of the spread of the virus between and within breeding colonies and the number of dead adult Sandwich Terns recorded at breeding sites throughout
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Population estimates and sex ratio of the Critically Endangered Antioquia Brushfinch Atlapetes blancae Bird Conserv. Int. (IF 1.6) Pub Date : 2024-02-02 Sergio Chaparro-Herrera, Juan Pablo Gomez, Marcela Restrepo Arias, José Miguel Ponciano
Summary Antioquia Brushfinch Atlapetes blancae is a recently rediscovered Colombian microendemic species with a restricted distribution. Although the species might use a variety of habitats, current information suggests that it is a shrubland specialist. It is categorised as “Critically Endangered” because due to habitat loss its population has been estimated to be smaller than 50 individuals. Such
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Environmental effects on reproduction in a managed population of the harvested and Endangered Saker Falcon Falco cherrug Bird Conserv. Int. (IF 1.6) Pub Date : 2024-01-31 Yuke Zhang, Zhongru Gu, Batbayar Bold, Batmunkh Davaasuren, Batbayar Galtbalt, Amarkhuu Gungaa, Gankhuyag Purev-Ochir, Nyambayar Batbayar, Lutfor Rahman, Xinhai Li, Qiang Dai, Xiangjiang Zhan, Andrew Dixon
Summary We report how artificial nests can be utilised at scale in nest site-limited areas of Mongolia to create a managed population of Saker Falcons (Falco cherrug), an “Endangered” species that is harvested for international trade. The provision of 5,000 artificial nests created an average annual saker population of 602 (SE ± 59) breeding pairs, producing an estimated 1,735 (SE ± 272) fledglings
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Population status of the endemic Pitcairn Reed Warbler Acrocephalus vaughani on Pitcairn Island, South Pacific Bird Conserv. Int. (IF 1.6) Pub Date : 2024-01-30 Steffen Oppel, Robert Eisler, Nik Aspey
Summary Reed warblers are widespread throughout Eurasia, Africa, and Australasia, and many species undertake long seasonal migrations. By contrast, other species of the genus Acrocephalus are sedentary and endemic to single oceanic islands. The Pitcairn Reed Warbler Acrocephalus vaughani is confined to the small volcanic island of Pitcairn in the South Pacific Ocean, and no population assessments have
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Assessment of long-term trends in a threatened grassland bird community using daily bird lists Bird Conserv. Int. (IF 1.6) Pub Date : 2024-01-24 Akshay Bharadwaj, Sarang Mhamane, Priti Bangal, Tarun Menon, Kavita Isvaran, Suhel Quader
Summary Open natural ecosystems (ONEs), such as tropical grasslands, are among the most threatened habitats on Earth today. The long-term monitoring of ONEs is an important research domain that is essential for understanding anthropogenic impacts and facilitating conservation action. Using a simple day-listing method over a 13-year period, we studied species trends in a central Indian grassland–agriculture
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Northward migration of Red Knots Calidris canutus rufa and environment connectivity of southern Brazil to Canada Bird Conserv. Int. (IF 1.6) Pub Date : 2024-01-16 Antônio Coimbra de Brum, Júlia Victória Grohmann Finger, Richard G. Lathrop, Stephanie Feigin, Joseph Smith, Lawrence Joseph Niles, Maria Virginia Petry
Summary During their northward migration, Red Knots Calidris canutus rufa stop at the Lagoa do Peixe National Park in the extreme south of Brazil to build up fat reserves for their journey to their Canadian breeding grounds. We tracked five Red Knots with PinPoint Argos-75 GPS transmitters to investigate differences in migration strategies from this stopover. Tracked birds used two different routes:
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Recent trends in populations of Critically Endangered Gyps vultures in India Bird Conserv. Int. (IF 1.6) Pub Date : 2024-01-03 Vibhu Prakash, Hemant Bajpai, Soumya S. Chakraborty, Manan Singh Mahadev, John W. Mallord, Nikita Prakash, Sachin P. Ranade, Rohan N. Shringarpure, Christopher G. R. Bowden, Rhys E. Green
Summary This paper reports results from the eighth of a series of road transect surveys of Gyps vultures conducted across northern, central, western, and north-eastern India since the early 1990s. Populations of the White-rumped Vulture Gyps bengalensis, Indian Vulture G. indicus, and Slender-billed Vulture G. tenuirostris declined rapidly, beginning in the mid-1990s. The principal cause of the declines
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Passive acoustic monitoring detects new records of globally threatened birds in a high-elevation wetland (Free State, South Africa) Bird Conserv. Int. (IF 1.6) Pub Date : 2023-12-27 Toka Mosikidi, Nicholas Le Maitre, Sandy-Lynn Steenhuisen, Vincent Ralph Clark, Kyle Smith Lloyd, Aliza Le Roux
Summary Wetlands act as islands of high biodiversity within the ecological landscape and provide crucial ecosystem services to society. Anthropogenic activities are driving wetland degradation and it has become increasingly rare to find wetlands that do not show signs of biodiversity loss or alteration. The exacerbated loss of biodiversity in wetlands has a negative impact on the local economy and
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Relationship between age and method of population estimation and the impact of changes in range-size maps on the IUCN Red List assessments of birds Bird Conserv. Int. (IF 1.6) Pub Date : 2023-12-12 David A. Wiedenfeld, Marcelo F. Tognelli
Summary Population size is one component of several criteria in the International Union for Conservation of Nature (IUCN) Red List of Threatened Species (Red List). For these criteria, the quality of the population estimation can therefore have significant impact on the assessed status. To evaluate population estimate quality, we selected 473 species of land birds from the Americas considered by the
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Remnant Rhine delta population of Great Reed Warblers maintains high diversity in migration timing, stopping sites, and winter destinations Bird Conserv. Int. (IF 1.6) Pub Date : 2023-12-11 Jan van der Winden, Peter W. van Horssen, Symen Deuzeman, Theunis Piersma
Summary Many Afro-Palearctic songbird migrants have declined, with conservation efforts mainly focused on the restoration of breeding habitat. However, pressures outside the breeding season might play a role. This includes the possibility that local relict populations no longer maintain the original phenotypic variation in migration patterns, with a loss of flexibility. The Great Reed Warbler Acrocephalus
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Evaluation of the limiting factors affecting the Seychelles Kestrel Falco araeus on Praslin Island (Seychelles) and considerations regarding a possible reintroduction of the species Bird Conserv. Int. (IF 1.6) Pub Date : 2023-12-11 Michele Barilari, Mattia Tonelli
Summary The Seychelles Kestrel Falco araeus is an endemic species confined to the larger granitic islands in the Seychelles archipelago. It is classified as “Vulnerable” and became extinct on Praslin and La Digue islands in the 1970s, leading to an attempt of reintroduction in 1977. This reintroduction was not a success, with the last census reporting only four breeding pairs on Praslin Island. Studies
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The conservation status of the Nubian Bustard Nubotis nuba: a review and prognosis Bird Conserv. Int. (IF 1.6) Pub Date : 2023-11-21 N. J. Collar, Tim Wacher
Summary Records of the Nubian Bustard Nubotis nuba range across the drier northern component of the Sahel zone in Africa from Mauritania through Mali, Niger, and Chad to Sudan. Reports of significant hunting pressure have caused it to be treated as IUCN “Near Threatened” for almost 40 years, but information relating to distribution and population trends remains scattered, anecdotal, and unevaluated
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Assessment of suitable habitats using satellite imagery: example of the Northern Bald Ibis Geronticus eremita in south-eastern Turkey Bird Conserv. Int. (IF 1.6) Pub Date : 2023-09-26 Andre Schenker, Andreas Erhardt
Summary The increase in the semi-wild Northern Bald Ibis Geronticus eremita population in Birecik, south-eastern Turkey motivated the Working Group of the Agreement on the Conservation of Africa-Eurasian Migratory Waterbirds (AEWA) to propose the establishment of a second semi-wild Northern Bald Ibis population in Turkey. This paper presents an assessment approach that identifies potential suitable
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Multi-resolution habitat models of the Puerto Rican Nightjar Antrostromus noctitherus Bird Conserv. Int. (IF 1.6) Pub Date : 2023-09-13 Francisco J. Vilella, Rafael González
Summary The Puerto Rican Nightjar Antrostomus noctitherus is an endemic Caprimulgid found in dry coastal and lower montane forests of south-western Puerto Rico. Information on the species (e.g. abundance, nesting biology) has been mostly restricted to forest reserves (i.e. Guánica Forest and Susúa Forest) with limited information available from private lands. We collected stand-level vegetation structure
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Human-induced mortality an overlooked threat for raptors in Nepal Bird Conserv. Int. (IF 1.6) Pub Date : 2023-09-12 Tulsi R. Subedi, Juan M. Pérez-García, Sandesh Gurung, Hem S. Baral, Aishwarya Bhattacharjee, José D. Anadón, Munir Z. Virani, Simon Thomsett, Ralph Buij
Summary Raptors play a unique role in ecosystem services and are regarded as effective indicators of ecosystem health. In recent years, varieties of anthropogenic factors have threatened the majority of raptor species worldwide. Nepal is considered a global hotspot for threatened and declining raptor species, but there is limited information on the direct human threats to the raptor populations living
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Forest raptor nest selection traits in Mediterranean forest (Maamora, North Africa): conservation implications Bird Conserv. Int. (IF 1.6) Pub Date : 2023-09-07 Amalia Segura, Pelayo Acevedo
Summary Forest raptor nest-site selection is mostly influenced by the quality of the habitat, food resources, and competition. Here, we identified common targets of trees selected as breeding sites and differences in selection traits, i.e. prey availability and intra- and interspecific competition, among Booted Eagle, Long-legged Buzzard, Black Kite, and Common Kestrel in a Mediterranean Cork Oak forest
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The effects of habitat loss and fragmentation on the relative abundance and conservation of Southern Black Korhaan Afrotis afra, a South African endemic Bird Conserv. Int. (IF 1.6) Pub Date : 2023-08-09 Steven W. Evans
Southern Black Korhaan is “Vulnerable” to extinction and a South African endemic that is restricted to the area of the Northern Cape Province that is west of the Great Escarpment, and to the area south of the Great Escarpment in the Western Cape, and the western section of the Eastern Cape Province. The 1990, 2014, and 2020 land use land cover (LULC) databases prepared for South Africa were used to
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Frigatebirds Fregata: impacts of potential taxonomic change on population and conservation status Bird Conserv. Int. (IF 1.6) Pub Date : 2023-07-31 John P. Croxall
Frigatebirds have been in taxonomic oblivion for nearly a century. A new genetic study by Martins et al. (2022) provides a stimulus and potential basis for a long-overdue modern review, which might lead to recognition of up to five new species-level taxa, two of which would be “Critically Endangered” globally and may already be effectively extinct. Even some of the more widespread frigatebird taxa
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Drivers of scarcity in the globally threatened Taita Falcon Falco fasciinucha: competition and habitat quality in the eastern escarpment region of South Africa Bird Conserv. Int. (IF 1.6) Pub Date : 2023-07-18 A. R. Jenkins, A. J. van Zyl, R. B. Colyn, C. W. Brink, H. A. Smit-Robinson, M. A. Whitecross
The Taita Falcon Falco fasciinucha is known to occur and breed at only a few locations in eastern and southern Africa and is currently listed as globally “Vulnerable” and “Critically Endangered” in South Africa. An accurate estimation of its conservation status is however hampered by a lack of data and understanding of the species’ habitat requirements and competitive interactions with congeners. Our
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Reported mortality of Griffon Vulture Gyps fulvus in central Italy and indications for conservation and management Bird Conserv. Int. (IF 1.6) Pub Date : 2023-07-13 Mario Posillico, Alessandra Costanzo, Sara Bottoni, Tiziana Altea, Giancarlo Opramolla, Antonello Pascazi, Marco Panella, Roberto Ambrosini
Vultures are long-lived species sensitive to human-caused mortality that has already determined a widespread collapse in Asian and African populations. They provide significant ecosystem services (regulatory and cultural) consuming livestock carcasses and saving greenhouse gas emissions, favouring nutrient recycling, environmental sanitation, and providing financial revenue. Appraising the incidence
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Spix’s Macaw Cyanopsitta spixii (Wagler, 1832) population viability analysis Bird Conserv. Int. (IF 1.6) Pub Date : 2023-07-06 Ugo Vercillo, Luiz Gustavo Oliveira-Santos, Marisa Novaes, Cromwell Purchase, Candice Purchase, Camile Lugarini, Ariane Ferreira, Paulo De Marco, Vladislav Marcuk, Jose Luiz Franco
Spix’s Macaw Cyanopsitta spixii is one of the most endangered Neotropical Psittacidae species. Extinct in the wild in the year 2000, in June 2022 the first cohort of C. spixii was reintroduced to its original habitat. For a successful reintroduction of the species, it is necessary to examine the viability of the population against natural and external threats and the environmental requirements for
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Birds in Europe 4: the fourth assessment of Species of European Conservation Concern Bird Conserv. Int. (IF 1.6) Pub Date : 2023-06-30 Ian J. Burfield, Claire A. Rutherford, Eresha Fernando, Hannah Grice, Alexa Piggott, Rob W. Martin, Mark Balman, Michael I. Evans, Anna Staneva
This is the fourth comprehensive assessment of the population status of all wild bird species in Europe. It identifies Species of European Conservation Concern (SPECs) so that action can be taken to improve their status. Species are categorised according to their global extinction risk, the size and trend of their European population and range, and Europe’s global responsibility for them. Of the 546
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Modeling the potential distribution of the threatened Grey-necked Picathartes Picathartes oreas across its entire range Bird Conserv. Int. (IF 1.6) Pub Date : 2023-06-15 Guilain Tsetagho, Tom Bradfer-Lawrence, Awa II Taku, Katharine A. Abernethy, Ekwoge E. Abwe, E. Tsi Angwafo, Fidelis Atuo, Martin Fichtler, Roger Fotso, Matthew H. Shirley, Bethan J. Morgan, Marc Languy, Fiona Maisels, Richard Oslisly, Luke Powell, Thomas Smith, Henri A. Thomassen, Matthias Waltert, Jared Wolfe, Robin C. Whytock
Understanding the distribution and extent of suitable habitats is critical for the conservation of endangered and endemic taxa. Such knowledge is limited for many Central African species, including the rare and globally threatened Grey-necked Picathartes Picathartes oreas, one of only two species in the family Picathartidae endemic to the forests of Central Africa. Despite growing concerns about land-use
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Traditional egg-harvesting policies for the endemic Moluccan Scrubfowl Eulipoa wallacei on Haruku Island, Indonesia, and its conservation implications Bird Conserv. Int. (IF 1.6) Pub Date : 2023-05-25 Handy Erwin Pier Leimena, Achmad Sjarmidi, Tati Suryati Syamsudin
Traditional policies on using wild species are critical in developing scenarios for community engagement in conserving wild species populations. As such, this study examines the traditional practice of harvesting eggs from Moluccan Scrubfowl Eulipoa wallacei on Haruku Island, Indonesia, and its implications for bird population conservation. Using a closed-ended questionnaire, we surveyed 200 respondents
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Distribution and abundance of threatened and heavily traded birds in the mountains of western Java Bird Conserv. Int. (IF 1.6) Pub Date : 2023-05-11 Stuart J. Marsden, Achmad Ridha Junaid, Fajar Kaprawi, Faris Muladi, Ganjar Cahyo Aprianto, S. (Bas) van Balen, Ria Saryanthi, Nigel J. Collar, Christian Devenish
There is serious concern for the future of a wide range of birds in Java and elsewhere in Indonesia due to both loss of habitat and trapping for the cagebird trade (the so-called “Asian Songbird Crisis”). Despite this concern, few data on presence and abundance of key species exist. We provide such data on 184 bird species from over two years of biodiversity surveys from 37 sites on 12 mountains in
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Population trends, size, and potential threats to Bristle-thighed Curlew Numenius tahitiensis: new data from French Polynesia Bird Conserv. Int. (IF 1.6) Pub Date : 2023-05-08 Frédéric Jiguet
Based on censuses in 2021 and 2022 of Bristle-thighed Curlews Numenius tahitiensis on 10 atolls of French Polynesia, the species has declined by c.50% over the last two decades. While the species has recently been down-listed from “Vulnerable” to “Near Threatened”, these new data would qualify it for an “Endangered” Red List status. The non-breeding population on Tuamotu numbers approximately 1,000
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Trends and population estimate of the threatened Buff-breasted Sandpiper Calidris subruficollis wintering in coastal grasslands of southern Brazil Bird Conserv. Int. (IF 1.6) Pub Date : 2023-05-08 Fernando A. Faria, Rafael A. Dias, Glayson A. Bencke, Leandro Bugoni, Nathan R. Senner, Juliana B. Almeida, Guilherme Tavares Nunes, Maycon S. S. Gonçalves, James E. Lyons
Information about population sizes, trends, and habitat use is key for species conservation and management. The Buff-breasted Sandpiper Calidris subruficollis (BBSA) is a long-distance migratory shorebird that breeds in the Arctic and migrates to south-eastern South America, wintering in the grasslands of southern Brazil, Uruguay, and Argentina. Most studies of Nearctic migratory species occur in the
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Ecology and distribution of the “Critically Endangered” Blue-throated Hillstar Oreotrochilus cyanolaemus Bird Conserv. Int. (IF 1.6) Pub Date : 2023-04-25 Boris A. Tinoco, Juan F. Freile, Paul Molina, Agustín Carrasco, Nolberto Ordoñez, Elisa Bonaccorso
The Blue-throated Hillstar Oreotrochilus cyanolaemus is a recently described hummingbird endemic to the southern Andes of Ecuador. This “Critically Endangered” species faces multiple conservation problems; thus, acquiring basic ecological information is a key step for guiding sound and integral conservation actions. We performed a series of expeditions throughout the cordillera Chilla-Tioloma-Fierro
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Using acoustic recording units to investigate the effects of logging of indigenous trees in the Amathole forests, South Africa on Cape Parrot Poicephalus robustus breeding and the presence of three primary cavity-excavating bird species Bird Conserv. Int. (IF 1.6) Pub Date : 2023-04-24 Matthew Rea, Julia Elliot, Johann C. Carstens, Jessica Leaver, Kate Carstens, Kirsten Wimberger, Michael I. Cherry
The Amathole forest complex is the breeding stronghold of the endemic and vulnerable Cape Parrot Poicephalus robustus, and is also one of only two forest complexes in South Africa formally harvested for timber. The aim of this study was to determine if formal harvesting of indigenous trees, primarily the two yellowwood species Afrocarpus falcatus and Podocarpus latifolius, in 9 of 16 Amathole forests
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Landscape effects on the conservation of rear-edge populations of forest passerines (Passeriformes): current patterns and prospects Bird Conserv. Int. (IF 1.6) Pub Date : 2023-04-24 Ricardo Enrique Hernández-Lambraño, José Luis Tellería
Landscape changes affect species abundance and drive biodiversity loss. Here we explored if habitat amount and patch aggregation shape the abundance of forest passerines within the south-western Palaearctic (Morocco). As forests in this region are affected by increasing drought and temperature, we also forecasted their trends according to current predictions of climate change and explored how landscape
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Alarming decline of the Little Bustard Tetrax tetrax in one of its two population strongholds in Sardinia, Italy Bird Conserv. Int. (IF 1.6) Pub Date : 2023-04-17 Andrea Santangeli, Alberto Cardillo, Michele Pes, Mauro Aresu
Farmland biodiversity is declining worldwide, and especially in Western countries largely owing to the large-scale intensification of agricultural practices. The Little Bustard Tetrax tetrax is a steppe bird adapted to agro-pastoral ecosystems in Western Europe, and is one of those many farmland species declining due to changes in agricultural production systems. In the EU, the majority of the extant
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A review of the conservation status of Black Stork Ciconia nigra in South Africa, Lesotho, and Eswatini Bird Conserv. Int. (IF 1.6) Pub Date : 2023-04-11 Alan Tristram Kenneth Lee, Melissa A. Whitecross, Hanneline A. Smit-Robinson, David G. Allan, Linda van den Heever, Andrew Jenkins, Ernst F. Retief, Robin B. Colyn, Warwick Tarboton, Kishaylin Chetty, Christiaan Willem Brink
Across South Africa, Lesotho, and Eswatini, long-term citizen science atlas data have suggested concerning declines in the population of Black Stork Ciconia nigra. Unlike the Asian and European populations, the southern African Black Stork population is described as resident and is listed as “Vulnerable” in South Africa, Lesotho, and Eswatini. Here we report on surveys of historical nesting locations
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The importance of landscape heterogeneity and vegetation structure for the conservation of the Ortolan Bunting Emberiza hortulana Bird Conserv. Int. (IF 1.6) Pub Date : 2023-04-05 Franz Löffler, Thomas Fartmann
Over the last decades, European farmland birds have strongly declined, mainly driven by agricultural intensification. The Ortolan Bunting Emberiza hortulana has suffered one of the most severe declines among farmland specialists. In order to maintain viable populations of the species in the long run, there is a vital need for evidence-based conservation measures. The main goal of this study was to
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Short-term impact of an extreme weather event on the threatened Dupont’s Lark Chersophilus duponti Bird Conserv. Int. (IF 1.6) Pub Date : 2023-03-27 Cristian Pérez-Granados, Gerard Bota, Julia Gómez-Catasús, Magda Pla, Adrián Barrero, Pedro Sáez-Gómez, Margarita Reverter, Germán M. López-Iborra, David Giralt, Daniel Bustillo-de la Rosa, Julia Zurdo, Juan Traba
The frequency and intensity of extreme weather events represent a threat for biological diversity and are expected to increase in many regions over the following decades due to climate change. Our current knowledge about the impact of extreme weather events on the population dynamics of bird species is very limited. Here, we evaluated the impact of an extreme winter snowstorm on the abundance of 14
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Habitat selection and population status of breeding Wood Snipe Gallinago nemoricola in an alpine meadow in Sichuan, China Bird Conserv. Int. (IF 1.6) Pub Date : 2023-03-27 Xiaotong Ren, Shen Zhang, Ke Huang, He-Bo Peng, Changlin Li, Ding Zhao, Dehong Pang, Yong Wu, Peng Liu, Peng Chen, Rong Hou, Richard A. Fuller, Fangyuan Hua, Pinjia Que
The Wood Snipe Gallinago nemoricola is one of the least known shorebird species, and its habitat associations are very poorly understood. Here we provide the first assessment of the habitat use of the Wood Snipe during the breeding season. Between May and July 2021 at a 4-km2 alpine meadow in Sichuan province, China, we conducted population surveys and behavioural observations to identify sites where
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Trends in the area of suitable breeding habitat for the Endangered Lake Titicaca Grebe Rollandia microptera, 2001–2020 Bird Conserv. Int. (IF 1.6) Pub Date : 2023-03-15 D. A. Villar, P. R. Long, E. R. Gutierrez Tito, E. G. Moreno Terrazas, A. G. Gosler
The Lake Titicaca Grebe Rollandia microptera is a poorly studied endemic species found in the Lake Titicaca watershed of Peru and Bolivia. Multiple surveys from the early 2000s indicated that the species was suffering a rapid population decline with an unknown cause. At the same time as these surveys, reports emerged that there was an increase in burning of the totora wetlands which are thought to
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Another emerging threat to birds: avian mortality estimates from roadside transparent noise barrier collisions in South Korea Bird Conserv. Int. (IF 1.6) Pub Date : 2023-03-13 Hae-Min Seo, Young-Jun Kim, Eun-Jae Lee, Su-Gil Lee, Woo-Shin Lee, Chang-Yong Choi
Birds in flight are prone to collide with various transparent or reflective structures. While bird–window collision has been recognised as a critical conservation issue, collision with other transparent structures has been less understood. Noise barriers made of transparent materials are considered critical hazards for birds; however, little is known about the bird mortality they cause. We conducted
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Distribution and habitat assessment of an Endangered hummingbird: the Grey-bellied Comet Taphrolesbia griseiventris Bird Conserv. Int. (IF 1.6) Pub Date : 2023-03-13 Sandra Cuadros, Fernando Angulo
The Grey-bellied Comet (Taphrolesbia griseiventris) is a hummingbird species endemic to northern Peru and listed as Endangered by IUCN due to its small and fragmented population. Despite this, little has been attempted to increase knowledge of its natural history and ecology to provide current information and better evaluate its conservation status. Here, we used known curated records of the species
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Assessing the trade of Chinese Hwamei Garrulax canorus in the USA Bird Conserv. Int. (IF 1.6) Pub Date : 2023-03-02 S. Sunny Nelson, Chris R. Shepherd
The trade in Asian songbirds is contributing to declining populations of many species in the wild. The Chinese Hwamei Garrulax canorus is a popular songbird endemic to Asia that is traded both domestically and internationally. The songbird trade in the USA, particularly involving Asian songbirds, has not been well studied. We hypothesised that despite Convention on International Trade in Endangered
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Extensive protected area coverage and an updated global population estimate for the Endangered Madagascar Serpent-eagle Eutriorchis astur Bird Conserv. Int. (IF 1.6) Pub Date : 2023-02-27 Luke J. Sutton, Armand Benjara, Lily-Arison Rene de Roland, Russell Thorstrom, Christopher J. W. McClure
Knowledge gaps regarding distribution, habitat associations, and population size for rare and threatened range-restricted taxa lead to uncertainty in directing conservation action. Quantifying range metrics and species–habitat associations using Species Distribution Models (SDMs) with remote-sensing habitat data can overcome these setbacks by establishing baseline estimates for biological parameters
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Demographic consequences of management actions for the successful reintroduction of the White Stork Ciconia ciconia to the UK Bird Conserv. Int. (IF 1.6) Pub Date : 2023-02-20 Elouise Mayall, Lucy Groves, Rosalind Kennerley, Michael Hudson, Aldina Franco
Species reintroductions can be used in conservation management to increase biodiversity and aid in restoring ecosystem function. For reintroductions to be successful, it is important to identify the conditions required to establish a viable population. We developed a demographic model using Vortex10, an individual-based simulation software, to assess the long-term consequences of different management
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Distribution and habitat requirements of the Bahama Warbler Setophaga flavescens on Grand Bahama in 2018 Bird Conserv. Int. (IF 1.6) Pub Date : 2023-02-06 David J. Pereira, Matthew A. Gardner, Matthew Geary, Diana J. Bell, Nigel J. Collar
The Bahama Warbler Setophaga flavescens is restricted to Grand Bahama and Abaco in the Bahamas Islands, where in recent decades its pine forest habitat has been seriously affected by hurricanes. To assess its conservation status and determine its habitat requirements, we conducted point transects with playback and simultaneously took measurements at 464 locations in pine forest across Grand Bahama
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Assessing the potential disturbance effects on the use of Unmanned Aircraft Systems (UASs) for European vultures research: a review and conservation recommendations Bird Conserv. Int. (IF 1.6) Pub Date : 2023-02-02 Richard Zink, Elena Kmetova-Biro, Stefan Agnezy, Ivaylo Klisurov, Antoni Margalida
Vultures are among the most threatened bird guilds on the planet and have a unique functional role within ecosystems. They are therefore subject to increasing research interest, calling for standardised study approaches and monitoring methods. The use of Unmanned Aircraft Systems (UASs) is rapidly gaining popularity in ecological research due to technological advances, affordability, and accessibility
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Conservation of the surface-nesting Kermadec Petrel Pterodroma neglecta neglecta in the South Pacific: clarifying breeding ecology and the threat of avian ground predators Bird Conserv. Int. (IF 1.6) Pub Date : 2023-01-23 Nicholas Carlile, Terence O’Dwyer
Understanding population dynamics and impacts on island ecology remain top priorities for the conservation management of seabirds, particularly when attempting species-recovery for island restoration. Identifying suitable nesting habitat is a keystone detail in seabird restoration which can be complicated when predator pressures impact colony productivity and population viability. The surface-nesting
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Migration routes and stepping stones along the western flyway of Lesser White-fronted Geese (Anser erythropus) Bird Conserv. Int. (IF 1.6) Pub Date : 2023-01-23 Helmut Kruckenberg, Sander Moonen, Andrea Kölzsch, Niklas Liljebäck, Gerhard J. D. M. Müskens
In 2015 and 2016 four Lesser White-fronted Geese (Anser erythropus), a globally threatened species, were caught and tagged during spring migration representing nearly 10% of the entire Swedish breeding population at the time. Two of the birds were followed over more than one season. Tracking data revealed an unexpected wide network of migration corridors and staging sites. Autumn and spring migration
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First nests of Endangered Nordmann’s Greenshank Tringa guttifer found in over 40 years indicate nesting plasticity Bird Conserv. Int. (IF 1.6) Pub Date : 2023-01-23 Konstantin S. Maslovsky, Philipp N. Maleko, Vladimir V. Pronkevich, Jonathan C. Slaght, Abby N. Powell
Knowledge of the breeding ecology of Endangered Nordmann’s Greenshank Tringa guttifer is necessary to develop a comprehensive species-specific conservation plan. We found nine greenshank nests in Schaste Bay, Russian Far East during the summers of 2019–2021. These are the first nests found in over 40 years and the only discovered to date on mainland Russia. In contrast to previous nest descriptions
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Parrot population trends in Nicaragua revealed by long-term monitoring Bird Conserv. Int. (IF 1.6) Pub Date : 2022-12-12 David C. Hille, David A. Wiedenfeld, Martín Lezama-López, Donald J. Brightsmith, Michael A. Patten
Monitoring parrot populations is of high importance because there is a general lack of quantified population trends for one of the most threatened avian orders. We surveyed parrots in Nicaragua in 1995, 1999, 2004, and 2013 at a minimum of 227 points within 56 sites stratified among the Pacific, Central Highlands, and Caribbean biogeographical regions to assess population trends. From point-count data
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Movement ecology of the threatened Campo Miner Geositta poeciloptera and its implications for the conservation of tropical open grassland birds Bird Conserv. Int. (IF 1.6) Pub Date : 2022-12-01 Leonardo E. Lopes, Ricardo C. de Meireles, Helberth José C. Peixoto, João Paulo G. Teixeira, Tamara Luciane de S. S. Machado, Vitor T. Lombardi
Understanding the types of movements exhibited by a threatened species is paramount for creating conservation and management strategies. The Campo Miner (Geositta poeciloptera) is a threatened obligate grassland bird endemic to the South American Cerrado. Literature disagrees about its movement ecology, with authors suggesting strategies as contradictory as residency and nomadism. The species requires
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Combining tracking with at-sea surveys to improve occurrence and distribution estimates of two threatened seabirds in Peru Bird Conserv. Int. (IF 1.6) Pub Date : 2022-11-21 Johannes H. Fischer, Samhita Bose, Cynthia Romero, Matt Charteris, Patrick Crowe, Graham C. Parker, Samantha Ray, Kalinka Rexer-huber, Paul M. Sagar, David R. Thompson, Elizabeth Bell, Igor Debski, Javier Quiñones
Seabirds are highly threatened, including by fisheries bycatch. Accurate understanding of offshore distribution of seabirds is crucial to address this threat. Tracking technologies revolutionised insights into seabird distributions but tracking data may contain a variety of biases. We tracked two threatened seabirds (Salvin’s Albatross Thalassarche salvini n = 60 and Black Petrel Procellaria parkinsoni
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Biased adult sex ratios in Western Europe populations of Little Bustard Tetrax tetrax as a potential warning signal of unbalanced mortalities Bird Conserv. Int. (IF 1.6) Pub Date : 2022-11-15 Eva Serrano-Davies, Juan Traba, Beatriz Arroyo, François Mougeot, Francesc Cuscó, Santi Mañosa, Gerard Bota, Nuno Faria, Alexandre Villers, Fabián Casas, Carole Attie, Pierrick Devoucoux, Vincent Bretagnolle, Manuel B. Morales
Adult sex ratios (ASRs) have proved to correlate with population trends, which make them potential useful indicators of a species’ population trajectory and conservation status. We analysed ASRs and proportion of juveniles in flocks of an endangered steppe bird, the Little Bustard Tetrax tetrax, using surveys made during the non-breeding period in seven areas within its Western European range (one
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The recently discovered Principe Scops-owl is highly threatened: distribution, habitat associations, and population estimates Bird Conserv. Int. (IF 1.6) Pub Date : 2022-10-31 Bárbara Freitas, Martim Melo, Ceciliano do Bom Jesus, Sátiro R. da Costa, Yodiney dos Santos, Angelica Crottini, Ricardo Faustino de Lima
Species baseline information is required for effective biodiversity conservation. Here we provide sound ecological data to support effective conservation of the Principe Scops-owl, Otus bikegila Melo, Freitas, Verbelen, Costa, Pereira, Fuchs, Sangster, Correia, de Lima & Crottini 2022, discovered in 2016. We mapped the observed and potential distribution, inferred habitat associations, estimated population
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Evaluating the breeding phenology of the endangered ‘a‘o (Newell’s Shearwater Puffinus newelli) on Kaua‘i to better focus conservation actions and management decisions Bird Conserv. Int. (IF 1.6) Pub Date : 2022-10-27 André F. Raine, Scott Driskill, Jennnifer Rothe, Marc S. Travers
The ‘a‘o, or Newell’s Shearwater Puffinus newelli, is an endangered shearwater species endemic to the Hawaiian Islands, with 90% of the world population found on Kaua‘i. Understanding the breeding phenology of the species is vital for identifying key periods for colony management actions and the timing and exposure frequency to infrastructure threats such as powerline collisions and light attraction
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Nest microclimate and heat stress in African Penguins Spheniscus demersus breeding on Bird Island, South Africa Bird Conserv. Int. (IF 1.6) Pub Date : 2022-10-03 Shaun Welman, Lorien Pichegru
Low-latitude penguins naturally breed in burrows dug in guano. This affords them a buffered environment that remains cool and humid, reducing the risk of hyperthermia while on land. As a conservation strategy, several versions of artificial housing units have been trialled at various breeding sites of African Penguins (Spheniscus demersus) around South Africa, where former guano exploitation forced
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Population density and distribution of the Endangered Black Shama Kittacincla cebuensis Bird Conserv. Int. (IF 1.6) Pub Date : 2022-10-03 Lisa J. Paguntalan, Andrew R. T. Reintar, Godfrey C. Jakosalem, Gabrielle Peña, Alona Villarojo
The Endangered Black Shama Kittacincla cebuensis is endemic to the island of Cebu, Philippines. We surveyed 11 forest patches from February 2018 to March 2020 to determine current distribution, habitat requirements, and population density of the Black Shama. A total of 111 point count stations was surveyed resulting in 93 Black Shama detections. Using point count Distance sampling, the population density
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The effects of powerlines on bustards: how best to mitigate, how best to monitor? Bird Conserv. Int. (IF 1.6) Pub Date : 2022-09-19 João Paulo Silva, Ana Teresa Marques, Joana Bernardino, Tris Allinson, Yuri Andryushchenko, Sutirtha Dutta, Mimi Kessler, Ricardo C. Martins, Francisco Moreira, John Pallett, Mattheuns D. Pretorius, H. Ann Scott, Jessica M. Shaw, Nigel J. Collar
Bustards comprise a highly threatened family of birds and, being relatively fast, heavy fliers with very limited frontal visual fields, are particularly susceptible to mortality at powerlines. These infrastructures can also displace them from immediately adjacent habitat and act as barriers, fragmenting their ranges. With geographically ever wider energy transmission and distribution grids, the powerline
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Habitat selection and ontogeny of habitat use by juvenile Eurasian Spoonbill Platalea leucorodia revealed by GPS tracking Bird Conserv. Int. (IF 1.6) Pub Date : 2022-09-16 Manuela S. Rodrigues, Pedro M. Araújo, João P. Silva, José M. Abad-Gómez, Pedro C. Rodrigues, Jaime A. Ramos, José A. Alves
Despite the widely recognized value of wetlands in providing vital ecosystem services, these are presently being degraded and ultimately destroyed, leading to a decrease in the biodiversity associated with these areas. Some species inextricably linked to wetlands, however, have been increasing and (re)colonizing areas across their range; a notable example being the Eurasian Spoonbill Platalea leucorodia
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Range-wide changes in the North American Tufted Puffin Fratercula cirrhata breeding population over 115 years Bird Conserv. Int. (IF 1.6) Pub Date : 2022-09-06 Scott F. Pearson, Ilai Keren, Peter J. Hodum, Brie A. Drummond, J. Mark Hipfner, Nora A. Rojek, Heather M. Renner, Susan M. Thomas
Regional and local studies suggest that the Tufted Puffin Fratercula cirrhata in North America is declining in portions of its range. However, whether the overall population is declining, or its range is contracting with little change to the overall population size, is unknown. To examine population trends throughout its North American range, we assembled 11 datasets that spanned 115 years (1905–2019)
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Assessing the status of the Green Peafowl’s “expected stronghold” in dry forests along the Salawin River, north-west Thailand Bird Conserv. Int. (IF 1.6) Pub Date : 2022-09-02 Niti Sukumal, Somying Thunhikorn, Tommaso Savini
The suitable habitats of the Endangered Green Peafowl Pavo muticus have declined by 80% over the past century due to extensive anthropogenic degradation. Currently, only six strongholds remain in mainland South-east Asia. While there are estimates of the species’ presence and status in five of these, the sixth one, defined as an “expected stronghold” located in the suitable dry forest along the Salawin
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Occurrence patterns of the endangered Yellow Cardinal Gubernatrix cristata in north-east Argentina: only in savannahs and at sites away from roads Bird Conserv. Int. (IF 1.6) Pub Date : 2022-09-02 Fabricio Reales, Sebastián Dardanelli, Antonio E. Frutos, Martjan Lammertink
The endangered Yellow Cardinal Gubernatrix cristata is under pressure from habitat loss and from capturing for the cage bird trade. In north-east Argentina it is known to be associated with the Espinal ecoregion, but no information was available on habitat selection within this ecoregion. In Entre Ríos province, Argentina, we first sampled Yellow Cardinal presence in four environments: Espinal savannahs