英语语法分析

Given that predators can make it costly to beg for food, what benefit do begging nestlings derive from their communications?

既然捕食者可以让雏鸟为食物付出巨大代价，那么乞食的雏鸟们到底可以从这种交流方式中得到什么益处呢？

The dietary analysis showed that the nestlings of Egretta garzetta fed on fish and shrimps.

饮食分析表明，白鹭的雏鸟以鱼和虾为食。

If both eggs hatch the nestlings fight each other to the death-a behavior that is governed by hormones.

如果两枚蛋都孵化出来，他们也会相互争斗使其中一只致死，这一行为是由所受激素决定的。