Preliminary observations of the home range size and behaviour of the Sumatran Laughingthrush Garrulax bicolor
Preliminary observations of the home range size and behaviour of the Sumatran Laughingthrush Garrulax bicolor
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发表时间：
2017-04
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通讯作者：
Tomáš Bušina;M. Kouba
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作者：
Tomáš Bušina;M. Kouba
印度尼西亚在全球受威胁鸟类数量方面仅次于巴西。黄喉噪鹛原本数量很多，但由于宠物贸易的陷阱而遭受人口下降，现在被认为濒临灭绝。尽管从原地和异地圈养饲养计划获得的知识，很少有人知道的生物学和生态学的物种。我们的研究试图纠正这一点，进行了实地研究，其家庭范围的大小和行为。一组五个人位于北苏门答腊省，并从战略位置的隐藏超过三个星期的观察，估计其家庭范围的大小使用最小凸多边形（MCP）。我们总共收集了70个GPS点，代表视线或通话记录。居住区面积1.07平方公里，最偏远的边缘点相距1.9公里。该集团偶尔加入混合物种喂养羊群，其中包括栗冠噪鹛Rhinocichla mitrata和黑噪鹛Melanocichla lugubris。
Indonesia ranks second to Brazil in the number of globally threatened bird species. The Sumatran Laughingthrush Garrulax bicolor was formerly abundant but has suffered population declines due to trapping for the pet trade, and now considered endangered. Despite knowledge gained from in-situ and ex-situ captive rearing programs, little is known about the biology and ecology of the species. Our study sought to redress this by undertaking a field study of its home range size and behaviour. One group of five individuals was located in North Sumatra province and observed from strategically positioned hides over three weeks to estimate the size of its home range using Minimum Convex Polygons (MCP). In total, we collected 70 GPS points representing either sight or call records. The inhabited area covered 1.07 km 2 with the most remote edge points being 1.9 km apart. The group occasionally joined mixed species feeding flocks which included Chestnut-capped Laughingthrush Rhinocichla mitrata and Black Laughingthrush Melanocichla lugubris .