它们将这些垃圾场作为冬季的进食地点，而非飞行数千英里去寻找食物。
Instead of flying thousands of miles in search of food, they make the waste sites their winter feeding grounds.
鸟类在长途迁徙飞行之前，会用大量的食物喂肥自己。
Birds will fatten themselves with heavy feeding in advance of a long migrational flight.
管鼻鹱在海面上飞行大约400公里寻找食物。
The fulmars travel some 400 kilometers over the sea to find food.
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