They should then be able to gauge the extent to which individual birds depend on using sticks to feed themselves.
这样他们应该能够衡量出每只鸟在多大程度上依赖枝条来养活自己。
Male birds feed their young in some species, but they forget about them once they fly the coop.
有些雄鸟喂养自己的后代，可惜孩子飞走后，就忘了它们的模样。
They may flower before the birds and insects that feed on them, or the mammals that carry their pollen, are at large.
它们可能在以花为食的鸟类和昆虫或者搬运花粉的捕乳动物还在四处游荡之前开花。
In spring, caterpillars time their emergence to coincide with the bud burst of trees; birds start nesting when they can feed those newly emerged caterpillars to their fledglings.
春天，毛毛虫的出现时间和树木的萌芽一致；鸟儿开始筑巢的时间要跟毛虫出现的时间吻合，用来哺育幼鸟。
"These very specialized birds feed only in the forest understory," he explains. "they're so adapted, and feel so safe, they won't leave."
“这些非常特别的鸟类只存活在森林次冠层叶簇中，”他解释说，“它们如此地适应了那种环境，而且感觉如此得安全，因而它们不会离开那里。”
And she realized that not only was she able to feed and clothe and house herself but also see that people in her country were able to feed wild birds so that they don't go hungry in the winter.
她意识到不仅仅她有能力给自己提供吃的、穿的、住的，而且还看到她们国家的其他人给小鸟提供食物，以便它们不会在冬天挨饿。
Within the sar, the black eared kite is a very widespread species. they feed on dead fish, offal and snakes, winged termites, frogs and small birds.
麻鹰在本港的分布范围甚广，主要以死鱼动物内脏蛇飞白蚁蛙和小鸟为食粮。
Egrets are kind parents. Everyday they fly to distant places to catch fish and come back to feed all the food to their baby birds.
白鹭是善良的，它会每天远走高飞把捕捉的鱼虾全部吐进小鸟的嘴巴。
If you gave it anything to eat, it brought its wings round before the mouth, hovering and hiding its head in the manner of birds of prey when they feed.
如果你喂它东西吃，它就会把翅膀兜到嘴的前面，悬停在空中，把头遮起来，像猛禽吃食一样。
If you gave it anything to eat, it brought its wings round before the mouth, hovering and hiding its head in the manner of birds of prey when they feed.
如果你喂它东西吃，它就会把翅膀兜到嘴的前面，悬停在空中，把头遮起来，像猛禽吃食一样。
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