Nest-associated vocal behaviours of the south-eastern red-tailed black cockatoo, Calyptorhynchus banksii graptogyne , and the Kangaroo Island glossy black cockatoo, C. lathami halmaturinus,Austral Ecology

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Nest-associated vocal behaviours of the south-eastern red-tailed black cockatoo, Calyptorhynchus banksii graptogyne , and the Kangaroo Island glossy black cockatoo, C. lathami halmaturinus
Austral Ecology ( IF 1.6 ) Pub Date : 2020-06-14 , DOI: 10.1111/aec.12921
Daniella Teixeira _{1,

2} , Richard Hill _{2,

3} , Michael Barth ₄ , Martine Maron _{2,

5} , Berndt J. van Rensburg _{1,

6}

Affiliation

Animal vocalisations can signify diverse behavioural contexts, knowledge of which can be applied in bioacoustic monitoring programs. Australia’s endemic black cockatoos (Calyptorhynchus sp., family Cacatuidae) are highly vocal species that are threatened in many locations. In this study, we describe the nest-associated vocal behaviours of two endangered subspecies of black cockatoo, the south-eastern red-tailed black cockatoo, C. banksii graptogyne and the Kangaroo Island glossy black cockatoo, C. lathami halmaturinus. Breeding success is limiting their recoveries and nest monitoring is challenging, but vocal recordings might provide valuable long-term information hard to obtain otherwise. We recorded daily vocal activity at wild nests of both cockatoos using autonomous sound recorders. Combined with behavioural observations and video footage, we identified vocalisations characteristic of six behavioural contexts at nests: birds in flight, while perched, during begging (adult females), during courtship displays (adult males), when entering or sitting near to the nest hollow entrance (adult females), and from nestlings. Linear discriminant analysis on 12 acoustic measurements correctly classified 58.4% of calls of the red-tailed black cockatoo (n = 907 calls from eight nests) and 62.9% of calls of the glossy black cockatoo (n = 1632 calls from 11 nests). In both subspecies, the female nest call and nestling calls are the most conspicuous vocal indicators of active nesting, and therefore should be considered for their bioacoustic potential. Other adult vocalisations indicate a range of behavioural contexts that could be informative for monitoring nesting behaviour, and its association to habitat features, in these endangered subspecies.

中文翻译：

东南红尾黑凤头鹦鹉、Calyptorhynchus bankii graptogyne 和袋鼠岛光泽黑凤头鹦鹉 C. lathami halmaturinus 的巢相关发声行为

动物发声可以表示不同的行为背景，其知识可以应用于生物声学监测程序。澳大利亚特有的黑凤头鹦鹉（Calyptorhynchus sp.，Cacatuidae 科）是一种声音很大的物种，在许多地方都受到威胁。在这项研究中，我们描述了两个濒临灭绝的黑凤头鹦鹉亚种的巢相关发声行为，东南红尾黑凤头鹦鹉，C. bansii graptogyne 和袋鼠岛有光泽的黑鹦鹉，C. lathami halmaturinus。繁殖成功限制了它们的恢复，巢穴监测具有挑战性，但录音可能会提供有价值的长期信息，否则很难获得。我们使用自主录音机记录了两只凤头鹦鹉的野生巢穴的日常声音活动。结合行为观察和录像，我们确定了巢中六种行为背景的发声特征：飞行中的鸟类、栖息时、乞讨期间（成年雌性）、求偶期间（成年雄性）、进入或坐在巢穴空心入口附近时（成年雌性）以及从雏鸟。对 12 次声学测量的线性判别分析正确分类了 58.4% 的红尾黑凤头鹦鹉的叫声（n = 907 个来自八个巢的叫声）和 62.9% 的光面黑凤头鹦鹉的叫声（n = 1632 个来自 11 个巢的叫声）。在这两个亚种中，雌性巢叫和雏鸟叫是活跃筑巢最显着的声音指标，因此应考虑其生物声学潜力。其他成年发声表明了一系列行为背景，可以为监测筑巢行为提供信息，

更新日期：2020-06-14

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