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Status of endemic reed-warblers of the Mariana Islands, with emphasis on conservation strategies for the endangered Nightingale Reed-warbler Bird Conserv. Int. (IF 1.846) Pub Date : 2021-01-19 ANN P. MARSHALL; FRED A. AMIDON; RICHARD J. CAMP; P. MARCOS GORRESEN; PAUL M. RADLEY
Insular species, particularly birds, experience high levels of speciation and endemism. Similarly, island birds experience extreme levels of extinction. Based on a 2012 taxonomic assessment, historically there were four reed-warbler species in the Mariana Islands, the Guam Reed-warbler Acrocephalus luscinia (Guam), the Nightingale Reed-warbler Acrocephalus hiwae (Saipan and Alamagan), the Aguijuan
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Ecological and environmental factors affecting the foraging activity of the White-bellied Heron Ardea insignis (Hume, 1878) in Bhutan Bird Conserv. Int. (IF 1.846) Pub Date : 2021-01-12 PEMA KHANDU; GEORGE A. GALE; SARA BUMRUNGSRI
White-bellied Heron Ardea insignis (WBH) is critically endangered, but we lack data on many aspects of its basic ecology and threats to the species are not clearly understood. The goal of this study was to analyse WBH foraging microhabitat selection, foraging behaviour, and prey preferences in two river basins (Punatsangchhu and Mangdechhu) in Bhutan which are likely home to one of the largest remaining
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Bridled Quail-dove Geotrygon mystacea population assessment after hurricanes Irma and Maria, St. Eustatius, Caribbean Netherlands Bird Conserv. Int. (IF 1.846) Pub Date : 2021-01-11 FRANK F. RIVERA-MILÁN; HANNAH MADDEN; KEVIN VERDEL
Structural vegetation damage and food limitation are important effects of major hurricanes, particularly for fruit/seed-eating, forest-dependent Caribbean birds with restricted distributions and small populations, such as the Bridled Quail-dove Geotrygon mystacea. Motivated by the lack of abundance estimates, corrected for detection probability, we conducted distance-sampling surveys inside and outside
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Rangeland loss and population decline of the critically endangered Liben Lark Heteromirafra archeri in southern Ethiopia Bird Conserv. Int. (IF 1.846) Pub Date : 2021-01-11 BRUKTAWIT A. MAHAMUED; PAUL F. DONALD; NIGEL J. COLLAR; STUART J. MARSDEN; PAUL KARIUKI NDANG’ANG’A; MENGISTU WONDAFRASH; YILMA DELLELEGN ABEBE; JAMES BENNETT; SIMON R. WOTTON; DANIEL GORNALL; HUW LLOYD
Liben Lark Heteromirafra archeri is a ‘Critically Endangered’ species threatened by the loss and degradation of grassland at the Liben Plain, southern Ethiopia, one of only two known sites for the species. We use field data from nine visits between 2007 and 2019 and satellite imagery to quantify changes over time in the species’ abundance and in the extent and quality of its habitat. We estimate that
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Abundance and habitat associations of the globally endangered Giant Nuthatch Sitta magna in Southern Shan State, Myanmar Bird Conserv. Int. (IF 1.846) Pub Date : 2021-01-08 THURA SOE MIN HTIKE; PHILIP D. ROUND; TOMMASO SAVINI; NARUEMON TANTIPISANUH; DUSIT NGOPRASERT; GEORGE A. GALE
The Giant Nuthatch Sitta magna is a globally endangered species presumed to be declining, for which basic parameters of population and habitat associations remain largely unquantified. We focused on Myanmar, which potentially constitutes ~30% of the Giant Nuthatch global range and yet lacks recently published records. Our objectives were to survey key potential Giant Nuthatch localities in, or near
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Brood parasitism leads to zero recruitment in the globally endangered Yellow Cardinal Gubernatrix cristata Bird Conserv. Int. (IF 1.846) Pub Date : 2020-12-18 MELINA ATENCIO; JUAN CARLOS REBOREDA; BETTINA MAHLER
The Yellow Cardinal Gubernatrix cristata is an ‘Endangered’ passerine from southern South America. For the past three years a management plan for Yellow Cardinals has been implemented in Argentina, in which rescued individuals from the illegal cage bird trade were released back into suitable habitats within their population of origin. We studied the reproductive success of a mixed population of released
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Effects of seed-rich habitat provision on territory density, home range and breeding performance of European Turtle Doves Streptopelia turtur Bird Conserv. Int. (IF 1.846) Pub Date : 2020-12-15 JENNY C. DUNN; ANTONY J. MORRIS; PHILIP V. GRICE; WILL J. PEACH
Conservation measures providing food-rich habitats through agri-environment schemes (AES) have the potential to affect the demography and local abundance of species limited by food availability. The European Turtle Dove Streptopelia turtur is one of Europe’s fastest declining birds, with breeding season dietary changes coincident with a reduction in reproductive output suggesting food limitation during
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Survival rates and reproductive ecology of a reintroduced population of the Asian Crested Ibis Nipponia nippon in Shaanxi Qianhu National Wetland Park, China Bird Conserv. Int. (IF 1.846) Pub Date : 2020-12-03 MIN LI; XINPING YE; RONG DONG; XUEJING ZHANG; HU ZHANG; XIAOPING YU
Reintroductions aim to re-establish a viable population within the indigenous range of living organisms, especially of threatened species. The population of the Asian Crested Ibis Nipponia nippon, a well-known ‘Endangered’ bird species, has increased over 100 times since wild populations were rediscovered in 1981, and several reintroduction projects were subsequently carried out in its former range
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Incidental capture of seabirds in Argentinean side-haul trawlers Bird Conserv. Int. (IF 1.846) Pub Date : 2020-12-02 L. L. TAMINI; L. N. CHAVEZ; R. F. DELLACASA; R. CRAWFORD; E. FRERE
Between April 2008 and July 2015, we conducted a total of 18 trips on five different side-haul trawlers fishing within the Argentine Exclusive Economic Zone, monitoring 486 hauls. We observed 100% of the hauls and monitored trawl cables for 136.7 hours, about 5% of the trawl effort, to identify the levels of seabird bycatch from net entanglements and collisions with trawl cables. A total of 35 net
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Nest cameras do not affect nest survival in a meadow-nesting shorebird Bird Conserv. Int. (IF 1.846) Pub Date : 2020-12-02 VOLKER SALEWSKI; LUIS SCHMIDT
Identifying the fate of birds’ nests and the causes of breeding failure is often crucial for the development of conservation strategies for threatened species. However, collecting these data by repeatedly visiting nests might itself contribute to nest failure or bias. To solve this dilemma, automatic cameras have increasingly been used as a time-efficient means for nest monitoring. Here, we consider
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Negros Bleeding-heart Gallicolumba keayi prefers dense understorey vegetation and dense canopy cover, and species distribution modelling shows little remaining suitable habitat Bird Conserv. Int. (IF 1.846) Pub Date : 2020-12-01 HOLLY MYNOTT; MARK ABRAHAMS; DAPHNE KERHOAS
The Philippines is a global biodiversity hotspot, with a large number of threatened bird species, one of which is the ‘Critically Endangered’ Negros Bleeding-heart Gallicolumba keayi. The aim of this study was to investigate the habitat preference of the Negros Bleeding-heart and undertake species distribution modelling to locate areas of conservation importance based on identified suitable habitat
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The state of breeding birds in Greece: trends, threats, and implications for conservation Bird Conserv. Int. (IF 1.846) Pub Date : 2020-11-20 DIMITRIOS VAVYLIS; ANASTASIOS BOUNAS; GEORGIOS KARRIS; KOSTAS A. TRIANTIS
Birds are suffering from steep population declines on a global scale and they are one of the few taxonomic groups for which these declines are well documented by long-term monitoring data. This study provides a synthesis of the status of the breeding birds of Greece. To this aim, we retrieved population size estimates from six sources spanning 22 years (1992–2014) and calculated species’ trends in
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Drastic decline in the endemic brown shrike subspecies Lanius cristatus superciliosus in Japan Bird Conserv. Int. (IF 1.846) Pub Date : 2020-11-17 MUNEHIRO KITAZAWA; MASAYUKI SENZAKI; HIROAKI MATSUMIYA; SEIICHI HARA; HARUKA MIZUMURA
The Brown Shrike Lanius cristatus breeds across a large portion of eastern Asia. One subspecies, L. c. superciliosus, is primarily endemic to Japan and was historically abundant throughout its breeding range. However, both local- and broad-scale studies documented a drastic population decline between the 1970s and 1990s, and the status of the taxon is currently unavailable in Japan. We conducted a
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A distance sampling survey of the Critically Endangered Straw-headed Bulbul Pycnonotus zeylanicus in Singapore Bird Conserv. Int. (IF 1.846) Pub Date : 2020-11-16 WEN XUAN CHIOK; ELIZE Y. X. NG; QIAN TANG; JESSICA G. H. LEE; FRANK E. RHEINDT
The Straw-headed Bulbul Pycnonotus zeylanicus is one of South-East Asia’s most threatened songbirds due to relentless demand for the regional cage-bird trade. The species was recently uplisted from ‘Endangered’ to ‘Critically Endangered’ only two years after its previous uplisting. Intriguingly, populations in highly urbanised Singapore appear relatively secure. However, the last Singaporean density
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Occupancy of two forest specialist birds in the Southern Mistbelt Forests of KwaZulu-Natal and Eastern Cape, South Africa Bird Conserv. Int. (IF 1.846) Pub Date : 2020-11-13 S. THOBEKA GUMEDE; DAVID A. EHLERS SMITH; YVETTE C. EHLERS SMITH; SAMUKELISIWE P. NGCOBO; MBALENHLE T. SOSIBO; MFUNDO S. T. MASEKO; COLLEEN T. DOWNS
Establishing the specific habitat requirements of forest specialists in fragmented natural habitats is vital for their conservation. We used camera-trap surveys and microhabitat-scale covariates to assess the habitat requirements, probability of occupancy and detection of two terrestrial forest specialist species, the Orange Ground-thrush Geokichla gurneyi and the Lemon Dove Aplopelia larvata during
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The importance of riparian forests and tree plantations for the occurrence of the European Turtle Dove Streptopelia turtur in an intensively cultivated agroecosystem Bird Conserv. Int. (IF 1.846) Pub Date : 2020-11-06 GIANPASQUALE CHIATANTE; ZENO PORRO; ALBERTO MERIGGI
Farmland birds represent a large proportion of European avifauna, and the populations of several species have suffered a dramatic decline in recent decades. Among these species, the European Turtle Dove Streptopelia turtur has undergone rapid decline in much of its European range. Therefore, the main aims of this research are to estimate the population density of the Turtle Dove and to investigate
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Guiding local-scale management to improve the conservation of endangered populations: the example of Bonelli’s Eagle Aquila fasciata Bird Conserv. Int. (IF 1.846) Pub Date : 2020-11-04 ÀLEX ROLLAN; ANTONIO HERNÁNDEZ-MATÍAS; RAFEL BOSCH; ALBERT TINTÓ; ROGER PUIG-GIRONÈS; CARLES CASTELL; JOAN REAL
Understanding the environmental drivers of demographic processes is a prerequisite for providing the evidence-based conservation guidance and management actions required to address management goals at population level. Human activities, to which most species are not adapted, are having an ever-increasing impact on the environment. Most policies and strategies focus on broad-scale conservation actions
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Predation of nesting Thick-billed Parrots Rhychopsitta pachyrhyncha by bobcats in northwestern Mexico Bird Conserv. Int. (IF 1.846) Pub Date : 2020-11-04 JAMES KENDAL SHEPPARD; JOSÉ IGNACIO GONZÁLEZ ROJAS; JAVIER CRUZ; LUZ FRANCELIA TORRES GONZÁLEZ; MIGUEL ÁNGEL CRUZ NIETO; SERGIO DAVID JIMÉNEZ LEZAMA; EDWIN ALFREDO JUAREZ; NADINE LAMBERSKI
We report on what appear to be increasing predation events on nesting Thick-billed Parrots Rhychopsitta pachyrhyncha. Thick-billed Parrots are classified as ‘Endangered’ and their seasonal breeding range is restricted to increasingly fragmented and degraded high elevation mixed conifer forest habitat within the Sierra Madre Occidental region of north-western Mexico. Predation of established breeding
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Electrical Components Involved in Avian-Caused Outages in Iran Bird Conserv. Int. (IF 1.846) Pub Date : 2020-11-03 MAHMOOD KOLNEGARI; GREG J. CONWAY; ALI AKBAR BASIRI; CONNOR T. PANTER; MANDANA HAZRATI; MARYAM SHAMS RAFIEE; MIGUEL FERRER; JAMES F. DWYER
Avian electrocutions are a global conservation problem. Power outages associated with electrocutions are problematic for electric utilities focused on delivering reliable electric power. We used contextual data, photographs, line voltage, outage type and assessments of power line components to quantify outage-causing avian electrocutions throughout each of Iran’s 31 provinces. We evaluated records
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Habitat modelling locates nesting areas of the Endangered Black-capped Petrel Pterodroma hasitata on Hispaniola and identifies habitat loss Bird Conserv. Int. (IF 1.846) Pub Date : 2020-10-26 YVAN G. SATGÉ; ERNST RUPP; ADAM BROWN; PATRICK G. R. JODICE
The Black-capped Petrel or Diablotin Pterodroma hasitata has a fragmented and declining population estimated at c.1,000 breeding pairs. On land, the species nests underground in steep ravines with dense understorey vegetation. The only confirmed breeding sites are located in the mountain ranges of Hispaniola in the Caribbean, where habitat loss and degradation are continuing threats. Other nesting
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Comprehensive evidence for subspecies designations in Cook’s Petrel Pterodroma cookii with implications for conservation management Bird Conserv. Int. (IF 1.846) Pub Date : 2020-10-04 MATT J. RAYNER; AYLA L. VAN LOENEN; LARA D. SHEPHERD; ILINA CUBRINOVSKA; R. PAUL SCOFIELD; ALAN J. D. TENNYSON; MICHAEL BUNCE; TAMMY E. STEEVES
Cook’s Petrel Pterodroma cookii is an endemic New Zealand seabird that has experienced a large range decline since the arrival of humans and now only breeds on two offshore islands (Te Hauturu-o-Toi/Little Barrier Island and Whenua Hou/Codfish Island) at the extreme ends of its former distribution. Morphological, behavioural, and mitochondrial cytochrome oxidase 1 (CO1) sequence data led a previous
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Population growth rates in northern Cape Vulture Gyps coprotheres colonies between 2010 and 2019 Bird Conserv. Int. (IF 1.846) Pub Date : 2020-09-25 MARGARET T. HIRSCHAUER; KERRI WOLTER; ALEXANDRA HOWARD; BRIAN W. ROLEK; CHRISTOPHER J. W. MCCLURE
The ‘Endangered’ Cape Vulture Gyps coprotheres has been monitored across its range for decades through disparate studies varying in geographical scope and length. Yet, no long-term, range-wide survey exists for the species. Coordinated monitoring across the range of the Cape Vulture would be logistically challenging but provide a holistic view of population dynamics in this long-lived species that
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A contribution to reducing bycatch in a high priority area for seabird conservation in Portugal Bird Conserv. Int. (IF 1.846) Pub Date : 2020-09-14 NUNO OLIVEIRA; ANA ALMEIDA; HANY ALONSO; EMANUEL CONSTANTINO; ANDRÉ FERREIRA; IVÁN GUTIÉRREZ; ANA SANTOS; ELISABETE SILVA; JOANA ANDRADE
Bycatch is one of the main threats to marine biodiversity, affecting ocean ecosystems at a worldwide scale. The main focus of bycatch studies has been on the impact of larger vessels, with few studies assessing the impact of artisanal fisheries. Moreover, bycatch studies are often limited to a small number of marine regions, and significant gaps still exist in our knowledge of the spatial and temporal
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Modelling the potential non-breeding distribution of Spoon-billed Sandpiper Calidris pygmaea Bird Conserv. Int. (IF 1.846) Pub Date : 2020-09-04 TOM BRADFER-LAWRENCE; ALISON E. BERESFORD; GUY Q. A. ANDERSON; PYAE PHYO AUNG; QING CHANG; SAYAM U. CHOWDHURY; NIGEL A. CLARK; YURI N. GERASIMOV; RHYS E. GREEN; GEOFF M. HILTON; BAZ HUGHES; ELENA G. LAPPO; JING LI; EVGENY E. SYROECHKOVSKIY; PAVEL S. TOMKOVICH; CHRISTOPH ZOCKLER; GRAEME M. BUCHANAN
The Spoon-billed Sandpiper Calidris pygmaea is a ‘Critically Endangered’ migratory shorebird. The species faces an array of threats in its non-breeding range, making conservation intervention essential. However, conservation efforts are reliant on identifying the species’ key stopover and wintering sites. Using Maximum Entropy models, we predicted Spoon-billed Sandpiper distribution across the non-breeding
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GPS tracking reveals highly consistent use of restricted foraging areas by European Storm-petrels Hydrobates pelagicus breeding at the largest UK colony: implications for conservation management Bird Conserv. Int. (IF 1.846) Pub Date : 2020-09-01 MARK BOLTON
Seabirds face a diverse array of threats and are considered to comprise one of the most threatened avian groups globally. Development of appropriate conservation action requires a knowledge of the marine distribution of seabirds, furnished either by tracking the movements of individuals, or from at-sea surveys. Obtaining information on the distribution of the smallest seabird species, the storm-petrels
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Distribution, abundance, and on-land threats to Cabo Verde seabirds Bird Conserv. Int. (IF 1.846) Pub Date : 2020-08-28 GILSON SEMEDO; VITOR H. PAIVA; TERESA MILITÃO; ISABEL RODRIGUES; HERCULANO A. DINIS; JORGE PEREIRA; DIANA MATOS; FILIPE R. CEIA; NATHALIE M. ALMEIDA; PEDRO GERALDES; SARAH SALDANHA; NADITO BARBOSA; MARCOS HERNÁNDEZ-MONTERO; CAROLINO FERNANDES; JACOB GONZÁLEZ-SÓLIS; JAIME A. RAMOS
Pelagic seabird populations have declined strongly worldwide. In the North Atlantic there was a huge reduction in seabird populations following the European colonization of the Azores, Madeira and Canary archipelagos but information on seabird status and distribution for the subtropical region of Cabo Verde is scarce, unavailable or dispersed in grey literature. We compiled and compared the historical
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Poisoning causing the decline in South-East Asia’s largest vulture population – CORRIGENDUM Bird Conserv. Int. (IF 1.846) Pub Date : 2020-06-25 ROBIN LOVERIDGE; GERARD EDWARD RYAN; SUM PHEARUN; OLIVER GRAY-READ; SIMON P. MAHOOD; ALISTAIR MOULD; STEFAN HARRISON; RACHEL CROUTHERS; SOK KO; TOM CLEMENTS; JONATHAN C. EAMES; MATHIEU PRUVOT
Cambodia supports populations of three Critically Endangered vulture species that are believed to have become isolated from the rest of the species’ global range. Until recently Cambodia’s vulture populations had remained stable. However a recent spike in the number of reports of the use of poisons in hunting practices suggests the need to re-evaluate the conservation situation in Cambodia. Population
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History, status, and productivity of the Red-crowned Amazon Amazona viridigenalis in the Lower Rio Grande Valley of Texas Bird Conserv. Int. (IF 1.846) Pub Date : 2020-08-25 SIMON KIACZ; CLIFFORD E. SHACKELFORD; ANTHONY K. HENEHAN; DONALD J. BRIGHTSMITH
Newly established populations of endangered species can help mitigate declines elsewhere and can be a valuable genetic reservoir. When these populations are located within anthropogenic habitats, they may also help mitigate the potential biodiversity loss created by urbanization. The Red-crowned Amazon Amazona viridigenalis is an endangered species that has become naturalized in multiple urban areas
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Using playback to estimate the distribution and density of the world's smallest flightless bird, the Inaccessible Island Rail Atlantisia rogersi Bird Conserv. Int. (IF 1.846) Pub Date : 2020-08-24 BEN J DILLEY; GEORGE SWAIN; JULIAN REPETTO; PETER G RYAN
The Inaccessible Island Rail Atlantisia rogersi, the world’s smallest extant flightless bird, is endemic to Inaccessible Island, a 14-km2 uninhabited island in the Tristan da Cunha archipelago, central South Atlantic Ocean. Rail populations are notoriously hard to survey and the rugged topography of Inaccessible Island makes a survey particularly challenging. Fortunately, Inaccessible Island Rails
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Resilience in the aftermath of hurricanes: Fluctuations in a Critically Endangered population of West Indian Woodpeckers Melanerpes superciliaris nyeanus over two decades Bird Conserv. Int. (IF 1.846) Pub Date : 2020-08-14 MICHAEL E. AKRESH; ROBERT A. ASKINS; DAVID I. KING; FLOYD E. HAYES; PATRICIA E. BARRY; WILLIAM K. HAYES
Cyclonic storms (often called hurricanes, typhoons, or cyclones) often cause population declines in vulnerable bird species, and the intensity of these storms appears to be increasing due to climate change. Prior studies have reported short-term impacts of hurricanes on avifauna, but few have examined long-term impacts. Over two decades (1993–2018), we periodically surveyed a subspecies of West Indian
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Expert knowledge assessment of threats and conservation strategies for breeding Hen Harrier and Short-eared Owl across Europe Bird Conserv. Int. (IF 1.846) Pub Date : 2020-07-29 DARÍO FERNÁNDEZ-BELLON; JOHN LUSBY; JULES BOS; TONIO SCHAUB; ALAN MCCARTHY; ANTHONY CARAVAGGI; SANDRA IRWIN; JOHN O’HALLORAN
Hen Harrier Circus cyaneus and Short-eared Owl Asio flammeus are open-country birds of prey with overlapping distributions. Although both species face similar conservation threats across their ranges, work to date has largely been undertaken at a national scale with few attempts to collate and assess factors relevant to their conservation at an international scale. Here we use an expert knowledge approach
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Over-winter ecology and relative density of Canada Warbler Cardellina canadensis in Colombia: the basis for defining conservation priorities for a sharply declining long-distance migrant – CORRIGENDUM Bird Conserv. Int. (IF 1.846) Pub Date : 2020-07-20 LAURA N. CÉSPEDES; NICHOLAS J. BAYLY
The Canada Warbler Cardellina canadensis is a steeply declining Neotropical migratory bird and > 50% of its non-breeding range is within the Colombian Andes. Despite being an abundant migrant in Andean forests, the species’ elevational distribution and non-breeding ecology have yet to be studied, thereby precluding the design of effective conservation actions. During four non-breeding periods (2012–2016)
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Status and phenology of breeding seabirds and a review of Important Bird and Biodiversity Areas in the British Indian Ocean Territory Bird Conserv. Int. (IF 1.846) Pub Date : 2020-07-16 PETER CARR; STEPHEN VOTIER; HEATHER KOLDEWEY; BRENDAN GODLEY; HANNAH WOOD; MALCOLM A. C. NICOLL
Seabirds are one of the most threatened avian taxa and are hence a high conservation priority. Managing seabirds is challenging, requiring conservation actions at sea (e.g. Marine Protected Areas - MPAs) and on land (e.g. protection of breeding sites). Important Bird and Biodiversity Areas (IBAs) have been successfully used to identify sites of global importance for the conservation of bird populations
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Assessing the Status of the Critically Endangered White-bellied Heron Ardea insignis in north-east India Bird Conserv. Int. (IF 1.846) Pub Date : 2020-07-06 ROHAN K. MENZIES; MEGHA RAO; ROHIT NANIWADEKAR
The White-bellied Heron Ardea insignis is currently known to be restricted to Bhutan, Myanmar, and north-east India. This ‘Critically Endangered’ species is under threat from the ever-changing river systems, primarily due to anthropogenic pressures including the large number of proposed hydropower projects. We report results of the first systematic, large-scale river survey for this species in the
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First systematic sampling approach to estimating the global population size of the Critically Endangered Blue-throated Macaw Ara glaucogularis Bird Conserv. Int. (IF 1.846) Pub Date : 2020-06-16 SEBASTIAN K. HERZOG; OSWALDO MAILLARD Z.; TJALLE BOORSMA; GUSTAVO SÁNCHEZ-ÁVILA; VÍCTOR HUGO GARCÍA-SOLÍZ; ANAHÍ C. PACA-CONDORI; MARTA VAÍLEZ DE ABAJO; RODRIGO W. SORIA-AUZA
Reliable population size estimates are imperative for effective conservation and management of globally threatened birds like the ‘Critically Endangered’ Blue-throated Macaw Ara glaucogularis. Endemic to one of South America’s largest grassland floodplains, the Llanos de Moxos in northern Bolivia, the species’ global population size is uncertain. The region’s inaccessibility renders the application
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Effects of climate change and human influence in the distribution and range overlap between two widely distributed avian scavengers Bird Conserv. Int. (IF 1.846) Pub Date : 2020-06-08 FAUSTO SÁENZ-JIMÉNEZ; OCTAVIO ROJAS-SOTO; JAIRO PÉREZ-TORRES; ENRIQUE MARTÍNEZ-MEYER; JAMES K. SHEPPARD
Climate change can cause geographic displacement of the ecological niche of a species, so that similar species that previously did not coexist could begin to face new interactions. Such geographic displacement and increased competition can also be exacerbated by anthropic intervention. Until less than 100 years ago, Vultur gryphus and Coragyps atratus did not coexist. Nowadays, possibly as a result
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Conservation status of the recently described Ecuadorian Amazon parrot Amazona lilacina Bird Conserv. Int. (IF 1.846) Pub Date : 2020-06-01 REBECCA BIDDLE; IVETTE SOLIS PONCE; PAUL CUN; SIMON TOLLINGTON; MARTIN JONES; STUART MARSDEN; CHRISTIAN DEVENISH; ERIC HORSTMAN; KARL BERG; MARK PILGRIM
Amazona lilacina is a threatened species endemic to Ecuador, existing across a patchwork of mangroves, lowland coastal forests, agricultural and community owned land. The species was described in 2014 and listed as ‘Endangered’ on the IUCN Red List, however, full assessment of the population was lacking. Using a combination of field observations, roost surveys and community questionnaires, conducted
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An assessment of the Important Bird Areas (IBAs) of southern Paraguayan grasslands Bird Conserv. Int. (IF 1.846) Pub Date : 2020-05-20 VIVIANA ROJAS BONZI; HUGO CABRAL; HUGO DEL CASTILLO; CAMILO BENÍTEZ-RIVEROS; TATIANA GALLUPPI; LORENA SFORZA; MARCOS BÁEZ; ALBERTO YANOSKY
We present an assessment of the Southern Paraguayan Grasslands using Important Bird Areas (IBAs) located in a grassland landscape mosaic. Eleven IBAs in southern Paraguay were evaluated 10 years after their designation, using the BirdLife International method to assess the state, pressure, and response of these areas, during 2017 and 2018. Overall, the Pressure from ecosystem modifications led by fire
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What is the reliability of visually based animal trade census outcomes? A case study involving the market monitoring of the Sumatran Laughingthrush Garrulax bicolor Bird Conserv. Int. (IF 1.846) Pub Date : 2020-05-18 TOMÁŠ BUŠINA; MAREK KOUBA; NURSAHARA PASARIBU
A considerable variety of Indonesian avifauna is forced into the domestic and international pet trade, where the majority of individuals are caught in the wild. To monitor the volume and development of the trade and to evaluate the threat status of the traded species, bird market surveys are usually performed. The most commonly used monitoring technique is the “Direct Counting Method – DCM”, i.e. the
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The southern Jiangsu coast is a critical moulting site for Spoon-billed Sandpiper Calidris pygmaea and Nordmann’s Greenshank Tringa guttifer Bird Conserv. Int. (IF 1.846) Pub Date : 2020-05-08 ZIYOU YANG; BENJAMIN J. LAGASSÉ; HUI XIAO; MICHA V. JACKSON; CHUNG-YU CHIANG; DAVID S. MELVILLE; KAR SIN KATHERINE LEUNG; JING LI; LIN ZHANG; HE-BO PENG; XIAOJING GAN; WEN-LIANG LIU; ZHIJUN MA; CHI-YEUNG CHOI
The extent of intertidal flats in the Yellow Sea region has declined significantly in the past few decades, resulting in severe population declines in several waterbird species. The Yellow Sea region holds the primary stopover sites for many shorebirds during their migration to and from northern breeding grounds. However, the functional roles of these sites in shorebirds’ stopover ecology remain poorly
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Distribution of Olrog’s Gull Larus atlanticus from Bahía San Blas during the non-breeding period: signals of partial migration Bird Conserv. Int. (IF 1.846) Pub Date : 2020-05-05 SOFÍA COPELLO; NICOLÁS SUÁREZ; PABLO YORIO; MARÍA T. RAVASI; JESICA A. PAZ; PABLO GARCÍA BORBOROGLU; MARICEL GRAÑA GRILLI; MARCO FAVERO; JUAN P. SECO PON
The Olrog’s Gull Larus atlanticus is an endemic and threatened species of the south-western Atlantic. Little is known about its movements during the non-breeding period. The objective of this study was to analyse the migration of the species by tracking adults from Bahía San Blas (Buenos Aires province, Argentina) with geolocators and using information of sightings of ringed gulls. Differences between
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Spatial and temporal variation in the migration of Ruddy-headed Goose in southern South America using satellite tagging Bird Conserv. Int. (IF 1.846) Pub Date : 2020-04-30 JULIETA PEDRANA; KLEMENS PÜTZ; LUCÍA BERNAD; SEBASTIÁN MUÑOZ; ANTONELLA GOROSÁBEL; GABRIEL CASTRESANA; ALEJANDRO LEISS; JUAN PABLO SECO PON
Ruddy-headed Goose Chloephaga rubidiceps is the smallest of the five South American sheldgeese and has two separate populations: one sedentary, which resides in the Malvinas/Falkland Islands and one migratory that overwinters mainly in the Pampas region, Argentina and breeds in Southern Patagonia. The Ruddy-headed Goose’s continental population has decreased considerably, and recent estimates indicated
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Grazing pressure and the interaction dynamics of the endemic Cyprus Warbler Sylvia melanothorax and its recently colonising congener the Sardinian Warbler S. melanocephala Bird Conserv. Int. (IF 1.846) Pub Date : 2020-04-27 MARTIN A. HELLICAR; ALEXANDER N.G. KIRSCHEL
The recent classification of the endemic Cyprus Warbler to a Species of European Conservation Concern by BirdLife International has renewed interest in its interaction with the Sardinian Warbler, a widespread Sylvia that was first confirmed as breeding in Cyprus in the 1990s and has since expanded in numbers and range. In areas where the Sardinian Warbler has become established, there has been a reduction
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Review of trial reintroductions of the long-lived, cooperative breeding Southern Ground-hornbill Bird Conserv. Int. (IF 1.846) Pub Date : 2020-04-27 LUCY V. KEMP; ANTOINETTE KOTZE; RAYMOND JANSEN; DESIRÉ L. DALTON; PAUL GROBLER; ROB M. LITTLE
Reintroduction to, or reinforcement of, threatened wild populations are commonly used conservation strategies. Reintroductions of the Southern Ground-hornbill Bucorvus leadbeateri have been tested as a potential conservation tool for this vulnerable species since 1995. Forty-two individuals have been reintroduced under varying management strategies. We analysed the outcomes of these attempts to assess
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Changes in nesting numbers and breeding success of African White-backed Vulture Gyps africanus in north-central Botswana Bird Conserv. Int. (IF 1.846) Pub Date : 2020-04-24 ; LEUNGO B. L. LEEPILE; GLYN MAUDE; PETE HANCOCK; RICHARD P. READING; BRIAN BRIDGES; ROBYN HARTLEY; ARJUN AMAR
African White-backed Vultures were recently uplisted to ‘Critically Endangered’ by IUCN due to declines across their range. Poisoning is widely accepted as the major reason for these declines. Botswana supports a high number of this species (breeding pairs > c.1,200), but as yet no published information exists on their breeding success in the country. However, mass poisonings within Botswana and neighbouring
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Impacts of invasive rats and tourism on a threatened island bird: the Palau Micronesian Scrubfowl Bird Conserv. Int. (IF 1.846) Pub Date : 2020-04-24 PAUL M. RADLEY; ROBERT A. DAVIS; TIM S. DOHERTY
Invasive predators have decimated island biodiversity worldwide. Rats (Rattus spp.) are perhaps the greatest conservation threat to island fauna. The ground nesting Palau Micronesian Scrubfowl Megapodius laperouse senex (Megapodiidae) inhabits many of the islands of Palau’s Rock Island Southern Lagoon Conservation Area (RISL) in the western Pacific. These islands are also heavily visited by tourists
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Status, diversity and trends of the bird communities in Volcanoes National Park and surrounds, Rwanda Bird Conserv. Int. (IF 1.846) Pub Date : 2019-05-16 MIA A. DERHÉ; DEO TUYISINGIZE; WINNIE ECKARDT; FAIDA EMMANUEL; TARA STOINSKI
The Volcanoes National Park (VNP) in Rwanda, part of the Virunga massif in the Albertine Rift region, boasts some of Rwanda’s best remaining natural vegetation and is home to many endangered and endemic species. The park has suffered from high levels of degradation and destruction, reducing in size by 50% during the 1960s and 1970s, and remains under threat from illegal activities, human population
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The Avifauna of the Rio Branco, an Amazonian evolutionary and ecological hotspot in peril Bird Conserv. Int. (IF 1.846) Pub Date : 2019-06-24 LUCIANO N. NAKA; THIAGO ORSI LARANJEIRAS; GISIANE RODRIGUES LIMA; ALICE C. PLASKIEVICZ; DANIELE MARIZ; BRUNA M. DA COSTA; H. SUZANY G. DE MENEZES; MARCELA DE F. TORRES; MARIO COHN-HAFT
The Rio Branco is a river with unique biogeographic and ecological features, threatened by the Brazilian Government’s plan to build a major hydroelectric dam and associated hydroway along its course. The river crosses one of Amazonia’s largest rainfall gradients and a major geomorphological boundary along a savanna/forest ecotone, marked by the Bem Querer rapids. Above the rapids, the upper Rio Branco
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The world’s largest breeding colony of Leach’s Storm-petrel Hydrobates leucorhous has declined Bird Conserv. Int. (IF 1.846) Pub Date : 2019-07-19 SABINA I. WILHELM; APRIL HEDD; GREGORY J. ROBERTSON; JOSHUA MAILHIOT; PAUL M. REGULAR; PIERRE C. RYAN; RICHARD D. ELLIOT
Despite the global significance of the Leach’s Storm-petrel Hydrobates leucorhous colony on Baccalieu Island, Newfoundland and Labrador, Canada, the estimate of 3.36 million breeding pairs reported for 1984 by Sklepkovych and Montevecchi stands as the single published population estimate for the world’s largest colony. This study increases knowledge of this population by analysing data from additional
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Land and sea-based observations and first satellite tracking results support a New Ireland breeding site for the Critically Endangered Beck’s Petrel Pseudobulweria beckii Bird Conserv. Int. (IF 1.846) Pub Date : 2019-05-10 MATT J. RAYNER; KAREN A. BAIRD; JEREMY BIRD; STEVE CRANWELL; ANDRĒ F. RAINE; BERNARD MAUL; JULY KURI; JINGJING ZHANG; CHRIS P. GASKIN
The Beck’s Petrel Pseudobulweria beckii is a ‘Critically Endangered’ seabird whose breeding sites remain unknown. Historic observations suggest the species’ distribution is concentrated in the Bismarck Archipelago and particularly southern New Ireland. Over the course of two research expeditions in 2016 and 2017 we used on-land and at-sea observations, local interviews and satellite telemetry to understand
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Modeling the distribution of Nonggang Babbler Stachyris nonggangensis, a threatened bird of limestone karst forests of the Sino-Vietnam border, and implications for its conservation Bird Conserv. Int. (IF 1.846) Pub Date : 2019-07-25 DEMENG JIANG; EBEN GOODALE; GANG YANG; LIJIANG YU; AIWU JIANG; XU LUO
Information on the geographic distribution of a species is fundamental for its conservation. Nonggang Babbler Stachyris nonggangensis (NB) is a rare and newly discovered species that is restricted to limestone karst forest on the Sino-Vietnamese border and has been classified as ‘Vulnerable’ due to its narrow distribution. However, the extent of the habitat suitable for NB is poorly known. We conducted
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Partial recovery of Critically Endangered Gyps vulture populations in Nepal Bird Conserv. Int. (IF 1.846) Pub Date : 2019-05-24 TOBY H. GALLIGAN; KRISHNA P. BHUSAL; KHADANANDA PAUDEL; DEVENDRA CHAPAGAIN; ANKIT B. JOSHI; ISHWARI P. CHAUDHARY; ANAND CHAUDHARY; HEM S. BARAL; RICHARD J. CUTHBERT; RHYS E. GREEN
Populations of Critically Endangered White-rumped Gyps bengalensis and Slender-billed G. tenuirostris Vultures in Nepal declined rapidly during the 2000s, almost certainly because of the effects of the use in livestock of the non-steroidal anti-inflammatory drug diclofenac, which is nephrotoxic to Gyps vultures. In 2006, veterinary use of diclofenac was banned in Nepal and this was followed by the
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Vulture declines, threats and conservation: the attitude of the indigenous Ghanaian Bird Conserv. Int. (IF 1.846) Pub Date : 2019-08-08 JUSTUS P. DEIKUMAH
Understanding the attitude of people towards vultures, especially factors that influence behaviours that support their conservation, is crucial if the decline in vultures is to be slowed and reversed. Their vital ecosystem function in keeping the environment free of carcasses and reducing the spread of disease is not yet appreciated in Ghana. Little is known about the attitude of Ghanaians’ about vultures
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The Northern Bald Ibis Geronticus eremita in Morocco since 1900: Analysis of ecological requirements Bird Conserv. Int. (IF 1.846) Pub Date : 2019-07-05 ANDRE SCHENKER; FABIAN CAHENZLI; KARL G. GUTBROD; MICHEL THEVENOT; ANDREAS ERHARDT
The Northern Bald Ibis (NBI) Geronticus eremita, is an ‘Endangered’ bird species of which only very few wild breeding colonies have survived along the Atlantic coast of south-west Morocco. This paper analyses ecological conditions of the 72 breeding sites of the NBI that have been known since 1900 in Morocco. Characterisation of breeding sites is based on physical criteria (elevation above sea level
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Flying into extinction: Understanding the role of Singapore’s international parrot trade in growing domestic demand Bird Conserv. Int. (IF 1.846) Pub Date : 2019-06-14 SCOTT LI MENG ALOYSIUS; DING LI YONG; JESSICA G. LEE; ANUJ JAIN
South-East Asia’s bird trade is of global conservation concern as it has massively depleted wild populations of many species. Parrots (Order Psittaciformes) are especially vulnerable because they are the most heavily traded group of birds globally under the Convention on International Trade in Endangered Species (CITES) appendices. Singapore’s involvement in the global pet bird trade as a transhipment
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Congo Grey Parrot Psittacus erithacus densities in oil palm plantation, agroforestry mosaic and protected forest in Southwest Cameroon* Bird Conserv. Int. (IF 1.846) Pub Date : 2019-06-21 SASCHA DUEKER; DENIS KUPSCH; SERGE KADIRI BOBO; ECKHARD W. HEYMANN; MATTHIAS WALTERT
The Congo Grey Parrot Psittacus erithacus has experienced a severe population breakdown in recent decades. The rainforests of the Korup region in Southwest Cameroon may harbour a large population of this species, but density and population estimates from this area remain controversial. Before the 2016 breeding season, we surveyed Grey Parrots along transects (621.1 km survey effort) in three adjacent
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Congo Grey Parrot Psittacus erithacus densities in oil palm plantation, agroforestry mosaic and protected forest in Southwest Cameroon – ERRATUM Bird Conserv. Int. (IF 1.846) Pub Date : 2019-07-16 SASCHA DUEKER; DENIS KUPSCH; SERGE KADIRI BOBO; ECKHARD W. HEYMANN; MATTHIAS WALTERT
The Congo Grey Parrot Psittacus erithacus has experienced a severe population breakdown in recent decades. The rainforests of the Korup region in Southwest Cameroon may harbour a large population of this species, but density and population estimates from this area remain controversial. Before the 2016 breeding season, we surveyed Grey Parrots along transects (621.1 km survey effort) in three adjacent
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BCI volume 30 issue 1 Cover and Front matter Bird Conserv. Int. (IF 1.846) Pub Date : 2020-03-12
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BCI volume 30 issue 1 Cover and Back matter Bird Conserv. Int. (IF 1.846) Pub Date : 2020-03-12
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A citizen science survey discloses the current distribution of the endangered Yellow Cardinal Gubernatrix cristata in Argentina Bird Conserv. Int. (IF 1.846) Pub Date : 2020-03-20 MARISOL DOMÍNGUEZ; ROCÍO LAPIDO; ADRIÁN GORRINDO; DIEGO ARCHUBY; EMILIO CORREA; FABIÁN LLANOS; FABRICIO REALES; FABRIZIO PIANTANIDA; GERMÁN MARATEO; JORGE MERIGGI; LUCAS ANDREANI; MANUEL ENCABO; MARÍA LAURA GÓMEZ VINASSA; MAXIMILIANO BERTINI; MILTON PERELLÓ; RICARDO BANCHS; SEBASTIÁN CIRIGNOLI; SILVINA VERÓN; BETTINA MAHLER
The Yellow Cardinal Gubernatrix cristata is a globally endangered passerine from the southern cone of South America. Because of its conspicuous plumage and very attractive song, it suffers considerably from illegal pet trade. The largest remaining populations are found in Argentina, but no coordinated efforts have been made thus far to understand better its current distribution and conservation status
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