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The ranging behaviour of a tropical forest terrestrial insectivore: the Scaly-breasted Illadopsis

机译：热带森林陆生食虫的测距行为：鳞片胸伊拉德普西斯

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摘要

I radio-tracked 50 adult male territory holders of the Scaly-breasted Illadopsis Illadopsis albipectus in three areas with differing forest structure in Budongo, Forest,western Uganda, in order to relate aspects of ranging behaviour to generalised human impacts on forest structure. Birds followed a regular daily pattern, singing from a core area for up to two hours from dawn and then foraging for the rest of the day throughout their home range. Density (estimated using Dirichlet tessellations based on core singing areas) was higher and home ranges (100% minimum convex polygons) were smaller in degraded forest compared with both primary forest and less degraded selectively logged forest, but these differences were small. Home range size (1.21 to 1.81 ha) did not correlate with density (36.5-46.5 territories/km(2)). Overlap in home ranges was highest in degraded forest but very low in general. Birds in degraded forest had larger home ranges in the dry season compared with the wet season.
机译：我在乌干达西部布东戈的三个森林结构不同的地区，用无线电跟踪了50个成年S鳞鳞斑的伊拉德普利斯伊拉德普希斯albipectus的成年男性领地，以便将行为范围与人类对森林结构的普遍影响联系起来。鸟类遵循日常规律，从黎明起在核心区域唱歌长达两个小时，然后在其整个家中觅食。与原始森林和退化程度较低的有选择伐木森林相比，退化森林的密度（使用基于核心歌唱地区的狄利克雷镶嵌数据估计）较高，而家园范围（最小100％最小凸多边形）较小，但这些差异很小。家庭范围的大小（1.21至1.81公顷）与密度（36.5-46.5领土/ km（2））不相关。在退化的森林中，家庭范围的重叠最高，但总体上非常低。与雨季相比，退化森林中的鸟类在干旱季节有更大的家养范围。

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