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Cattle Egret and Common Ostrich associations in South Africa

机译:南非的牛背鹭和普通鸵鸟协会

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摘要

Cattle Egrets (Bubulcus ibis) in Africa commonly forage in association with large mammals, including livestock, wild ungulates and pachyderms (Blaker 1969, Dean and Macdonald 1981). In particular, Cattle Egret and cattle (Bos taurus) associations areone of the most well known of all bird and mammal associations (Heatwole 1965). Cattle Egrets benefit from cattle (and presumably other large mammals) by feeding on invertebrates and other small organisms disturbed by the foraging Cattle (Dinsmore 1973).Several studies have shown that Cattle Egrets greatly increase their foraging efficiency while decreasing their energy expenditure when feeding in association with cattle, as compared to feeding alone (Heatwole 1965, Dinsmore 1973, Grubb 1976). The diets of Cattle Egrets show considerable diversity, and primarily consist of invertebrates such as grasshoppers, beetles, flies, caterpillars, and earthworms (Siegfried 1971, Hockey et al. 2005).
机译:非洲的白鹭(Bubulcus ibis)通常与大型哺乳动物(包括牲畜,野生有蹄类动物和厚皮动物)一起觅食(Blaker 1969; Dean和Macdonald 1981)。特别是,牛背鹭和牛(Bos taurus)协会是所有鸟类和哺乳动物协会中最著名的协会之一(Heatwole 1965)。牛白鹭以无脊椎动物和其他受觅食的牲畜为食的小生物为食而得益于牛(可能还有其他大型哺乳动物)(Dinsmore 1973)。多项研究表明,牛白鹭极大地提高了觅食效率,同时减少了觅食时的能量消耗与单独喂养相比,与牛有关(Heatwole,1965; Dinsmore,1973; Grubb,1976)。牛白鹭的饮食表现出相当大的多样性,主要由无脊椎动物组成,例如蝗虫,甲虫,苍蝇,毛毛虫和earth(Siegfried 1971,Hockey等人,2005)。

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