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Feeding ecology of the Southern Bald Ibis, Geronticus calvus, in the Free State, South Africa

机译：南非自由州的南部秃头宜必思（Geronticus calvus）的饲养生态

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摘要

The feeding ecology of the Southern Bald Ibis, Geronticus calvus, was studied in the Free State Province, South Africa, during two breeding seasons in 1994 and 1996. Fields of harvested maize, burnt grass and overgrazed pastures are the main feeding habitats of the birds in this region throughout the breeding season. The ibises forage mainly in flocks ranging from 2 to 24 birds ((x) over bar = 5), often in association with cattle and other animals. Analysis of stomach contents, pellet contents and food remnants revealed that larvae of Busseolo fusca (Lepidoptera: Noctuidae) and imagos of Coleoptera constitute the staple food. These larvae were collected from maize stalks trampled by cattle, while Coleoptera were collected mainly from dung, grass clumps and from the ground in pastures. A considerable amount of inorganic matter, such as pieces of glass, porcelain, plastic, metal, buttons and gravel, was also found.
机译：在1994年和1996年的两个繁殖季节期间，在南非自由州省研究了南部秃头宜必思（小叶苍鹭）的摄食生态学。收获的玉米，烧草和过度放牧的牧场是鸟类的主要觅食生境在整个繁殖季节都处于该区域。宜必思主要在成群的2到24只禽类中觅食（[x]超过bar = 5），通常与牛和其他动物有关。胃内容物，颗粒含量和食物残渣的分析表明，Busseolo fusca（鳞翅目：夜蛾科）的幼虫和鞘翅目成虫是主食。这些幼虫是从牛践踏的玉米秸秆中收集的，而鞘翅目则主要是从粪便，草丛和牧场的地面收集的。还发现了大量的无机物，例如玻璃，瓷器，塑料，金属，纽扣和砾石。

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    《Ostrich》 |2001年第4期|共6页
  • 作者

    Kopij G;

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  • 正文语种 eng
  • 中图分类 鸟纲;
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