对11种食肉质果鸟类的喜食性、食量、取食行为等笼养观察。
Food palatability. food amounts and foraging behavior of 11 species of cagingbirds fed on fleshy-fruits were observed.
北京油葫芦喜阴、群集、食性杂、有馋食习惯，在食料不足时，可相互残杀，雄虫成熟后具有鸣叫的习性。
The dominant crickets in this area led a living habit of loving cloudy place, aggregation and mixed diets. They may murder each other while being short of foods.
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