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Territorial behaviour and breeding in the Southern Antpipit Corythopis delalandi (Aves: Rhynchocyclidae) in southeastern Brazil
Journal of Natural History ( IF 0.8 ) Pub Date : 2021-02-11 , DOI: 10.1080/00222933.2020.1830193
Gustavo de Melo Martins 1 , Dalila de Fátima Ferreira 2 , Sérgio Pacheco 3 , Rômulo Ribon 4 , Leonardo Esteves Lopes 1
Affiliation  

ABSTRACT

The Southern Antpipit is a terrestrial insectivore passerine that ranges in the undergrowth of semideciduous forests in central South America. Despite the historical interest on its disputed systematic position, no detailed study about its natural history is available. In this paper, we studied its territorial and breeding biology in southeastern Brazil. We studied colour-banded birds and closely monitored the nests found, estimating the home range using two distinct methods, the Minimum Convex Polygon (MCP) and the Kernel Density Estimator (KDE). The nest (n = 4) is a dome, somewhat elliptical in shape and with a side entrance, placed on the forest litter. Its structural layer is built with unidentified vegetable fibres, leaf petioles and horsehair fungus, and the external decorative layer is built with dry leaves and mosses. No well-defined lining layer was observed. Two eggs are usually laid and incubation, done solely by the female, lasts for 17 days. Both parents feed the nestlings, which fledge when 14–15 days old. Our data, together with citizen science data, reveal that the breeding season extends from August to December, therefore from the end of the dry season to the middle of the wet season. A mean home range size of 1.08 ± 0.44 ha was estimated using the MCP and of 1.42 ± 0.47 ha using the KDE (n = 9). The home range is defended against conspecifics, thus characterising an all-purpose territory, which is hold throughout the year, possibly during the entire reproductive life of the male.



中文翻译:

巴西东南部南部Antpipit Corythopis delalandi(Aves:Rhynchocyclidae)的领土行为和繁殖

摘要

南部蚁pi是一种陆生食虫性雀形目,分布在南美洲中部半落叶林的林下。尽管对其有争议的系统位置有历史兴趣,但尚无关于其自然历史的详细研究。在本文中,我们研究了其在巴西东南部的领土和繁殖生物学。我们研究了色带鸟并密切监视发现的鸟巢,使用最小凸多边形(MCP)和内核密度估计器(KDE)这两种不同的方法估计了归巢范围。巢(n = 4)是一个圆顶,形状略呈椭圆形,有一个侧门,放置在森林凋落物上。其结构层由不明的植物纤维,叶柄和马毛真菌构建,外部装饰层由干燥的叶子和苔藓构建。没有观察到明确的衬里层。通常产下两个卵,仅由雌性进行孵化,持续17天。父母双方都喂雏鸟,这些雏鸟在14-15天大时就开始发育。我们的数据与公民科学数据一起揭示,繁殖季节从8月到12月,因此从旱季结束到雨季中期。使用MCP估算的平均房屋范围为1.08±0.44公顷,使用KDE估算的平均房屋范围为1.42±0.47公顷(n = 9)。防卫范围不受种属侵害,因此是一处全年都可能存在的全能领地,可能在雄性的整个生殖过程中。当14-15天大时会飞起来。我们的数据与公民科学数据一起揭示,繁殖季节从8月到12月,因此从旱季结束到雨季中期。使用MCP估算的平均房屋范围为1.08±0.44公顷,使用KDE估算的平均房屋范围为1.42±0.47公顷(n = 9)。防卫范围不受种属侵害,因此是一处全年都可能存在的全能领地,可能在雄性的整个生殖过程中。当14-15天大时会飞起来。我们的数据与公民科学数据一起揭示,繁殖季节从8月到12月,因此从旱季结束到雨季中期。使用MCP估算的平均房屋范围为1.08±0.44公顷,使用KDE估算的平均房屋范围为1.42±0.47公顷(n = 9)。防卫范围不受种属侵害,因此是一处全年都可能存在的全能领地,可能在雄性的整个生殖过程中。

更新日期:2021-02-11
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