Minimum Nest Distances, Breeding Success and Use of Shared Cliffs for Andean Condor Vultur gryphus Breeding in Ecuador

IF 0.8 4区 生物学 Q3 ORNITHOLOGY Acta Ornithologica Pub Date : 2023-11-10 DOI:10.3161/00016454ao2023.58.1.009
Roberto Sanchez Mateos, Freddy Gallo-Viracocha
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Abstract

The reproductive ecology of the Andean Condor Vultur gryphus is poorly known. This note describes reproductive events of individual breeding pairs. We describe the minimum distances between nest sites, breeding success, elevation and the use of nesting cliffs of different breeding pairs of Andean Condors in the north-central Andes of Ecuador. We undertook 840 hours of observations of eight nesting events in areas on an elevational gradient from 2500 m to 4500 m during 2018 and 2019. Nesting events in Ecuador since 1996, were also reviewed which provided us a total of 21 breeding attempts at 16 nest sites. Minimum distances between the sites of breeding attempts were 25 m (since 1996) and 310 m (during the fieldwork). The nearest neighbour distance of Andean Condors simultaneously sharing the same cliff during partially overlapping breeding was 550 m and in different cliffs 2720 m. Breeding success was 0.75 and higher in reused nests. The results present previously unknown information that contributes to reproductive ecology and emphasizes the importance of the cliffs as critical areas for the conservation and permanence of the Andean Condor where management actions are urgent.
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厄瓜多尔安第斯秃鹰鹰头狮繁殖的最小巢距、繁殖成功率和共用悬崖的使用
安第斯秃鹰鹰头狮的生殖生态鲜为人知。本笔记描述了单个繁殖对的繁殖事件。我们描述了厄瓜多尔安第斯山脉中北部不同繁殖对安第斯秃鹰筑巢地点之间的最小距离,繁殖成功率,海拔和筑巢悬崖的使用。2018年和2019年,我们在海拔2500米至4500米的地区进行了840小时的8次筑巢观测。我们还回顾了1996年以来厄瓜多尔的筑巢事件,共在16个筑巢点进行了21次繁殖尝试。尝试繁殖地点之间的最小距离为25米(1996年以来)和310米(实地调查期间)。部分重叠繁殖时,安第斯秃鹰同时共享同一悬崖的最近邻居距离为550 m,不同悬崖的最近邻居距离为2720 m。重复使用巢穴的繁殖成功率为0.75或更高。研究结果提供了以前未知的信息,这些信息有助于生殖生态学,并强调了悬崖作为安第斯秃鹰保护和永久生存的关键区域的重要性,在那里采取管理行动迫在眉睫。
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来源期刊
Acta Ornithologica
Acta Ornithologica 生物-鸟类学
CiteScore
2.10
自引率
0.00%
发文量
14
审稿时长
>12 weeks
期刊介绍: Publishes scientific papers (original research reports, reviews, short notes, etc.) and announcements from all fields of ornithology. All manuscripts are peer-reviewed. Established in 1933 as Acta Ornithologica Musei Zoologici Polonici, since 1953 continued under the present title. Published twice a year by the Natura Optima Dux Foundation under the auspices of the Museum and Institute of Zoology, Polish Academy of Sciences.
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