大鸨是杂食性鸟类，但以植物性食物为主。
The Great Bustard is polyphagia bird, but it feeds mainly on plants.
杂食性，以植物及小动物为食，在饲养条件下也吃小型甲壳动物，并可用剁碎的蚊类幼虫、谷类和其它食物作为补充饲料。
They feed on plants and small animals and, in captivity, on small crustaceans and other foods. They have become naturalized in many parts of the eastern U. S.
骨顶鸡是杂食性鸟类，食物以植物为主，但也摄取动物性食物。
F. atra was omnivorous. The food list was mainly made up of vegetations, but also contained some animals.
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