The Great Bustard is polyphagia bird, but it feeds mainly on plants.
大鸨是杂食性鸟类，但以植物性食物为主。
The nest-site selection of Great Bustard is strict, it mainly selects the grassland with small hill which with gradient slow and nest above the middle parts of hill.
大鸨巢址选择严格，多选择在岗坡的中部以上、坡度较缓的草原上营巢。
I put foreward the concept gathering display field for the first time, and found that fire influences the gathering display field selection of Great bustard to a certainty.
首次提出集群求偶场的概念，并证明火烧对大鸨集群求偶场的选择具有一定影响。
During the growth of young Great Bustard, resting behavior kept a high percentage, foraging and preening behavior increased with the decreasing of singing and crouching behavior.
在雏鸟成长过程中，休息行为比例一直保持很高，觅食和理羽行为呈现明显的上升趋势，鸣叫和蹲伏行为逐渐减少。
During the growth of young Great Bustard, resting behavior kept a high percentage, foraging and preening behavior increased with the decreasing of singing and crouching behavior.
在雏鸟成长过程中，休息行为比例一直保持很高，觅食和理羽行为呈现明显的上升趋势，鸣叫和蹲伏行为逐渐减少。
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