野生动物摄影师被警告说，他们可能会因为在智能电话上播放鸟鸣声来诱使鸟儿离巢而被起诉。
Wildlife photographers have been warned they could be prosecuted for playing birdsong noises on smart phones to lure birds out of their nests.
出生扩散现象。当年轻动物离开家园去依靠自己生存的时候出现的一种现象。就好比鸟儿离巢，动物离开他们的家园。
Natal dispersal. That's what happens when young animals leave home to make a life for themselves. Birds leave the nest. Mammals leave their home territories.
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