First breeding records of Nonggang Babbler (Stachyris nonggangensis) in a limestone area in southern China
First breeding records of Nonggang Babbler (Stachyris nonggangensis) in a limestone area in southern China
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DOI：
10.1676/12-147.1
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发表时间：
2013-09
期刊：
影响因子：
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通讯作者：
Aiwu Jiang;F. Zhou;Ying-Huan Wu;Nai-fa Liu
中科院分区：
文献类型：
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作者：
Aiwu Jiang;F. Zhou;Ying-Huan Wu;Nai-fa Liu
摘要2008年在广西西南部石灰岩地区首次发现了农岗穗鹛（Stachyris nonggangensis）的繁殖记录。这里提供的记录包括行为，巢，蛋，孵化和繁殖成功率的信息。通过系统检查和无线电跟踪，我们发现了6个鸟巢（包括3个活跃的鸟巢）。发现大多数弄岗穗鹛开始成对觅食（雌雄）从3月中旬至下旬。它们在四月筑巢。这些巢穴被放置在石灰岩悬崖的洞穴中，或位于海拔206-323米的山腰上的巨大岩石上。这些巢是由气生根、树叶、树枝和柔软的草做成的。弄岗穗鹛产纯白色卵4-5枚，平均鲜重4.80 ± 0.11 g。雌性弄岗穗鹛的孵卵时间为74.5 ± 5.0%，孵卵期>18 d。因此，建议利用农岗穗鹛延长孵化期，减少觅食时间，以提高幼鸟的成活率。较高的巢捕食率是弄岗穗鹛种群增长的重要限制因子。
Abstract We present the first breeding records of Nonggang Babbler (Stachyris nonggangensis), a newly described bird species found in the limestone area of southwestern Guangxi, in southern China in 2008. The records presented here include information on behavior, nest, egg, incubation, and reproductive success rate. We discovered six nests (including three active nests) through systematic checking and radio tracking. Most Nonggang Babblers were found to begin foraging in pairs (male and female) from mid to late March. They build their nests in April. The nests were placed in cavities in a limestone cliff or on a massive rock located on the mountainside at altitudes ranging from 206–323 m. The nests were made of aerial roots, leaves, twigs, and soft grasses. Nonggang Babblers would lay 4–5 pure white eggs with an average fresh weight of 4.80 ± 0.11 g. Female Nonggang Babblers would spend 74.5 ± 5.0% of the day incubating their eggs, and the incubation period would last >18 days. We propose that Nonggang Babblers could prolong the incubation period and reduce foraging time to enhance the survival rate of fledglings. The high nest predation rate is an important limiting factor for the population growth of Nonggang Babblers.