animal behaviour birds
动物行为鸟类
以上为机器翻译结果，长、整句建议使用 人工翻译 。
It also makes sense that they would have fewer alarm calls, because captive birds don't experience the threat of predation. The study was published in the journal Animal Behaviour. Ann m.
他们也有在野外非常酷的领土广播呼叫[野生领土呼叫]那不是在圈养乌鸦中能发现的。
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