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。
The growth of nestlings of in little egret and pond heron appeared in s curve.
白鹭和池鹭雏鸟的生长表现为S型生长曲线。
He was hunting less and, after feeding the nestlings, would perched alone for hours.
它捕猎比以前少了，每次在喂过了幼隼之后，总是独自栖息在一旁，一待就是几个小时。
The condition of growth and development of the nestlings and their diet are also reported.
文中还报导了雏鸟的生长发育情况及食性。
The feeding way and a series of action were studied by moving the 15-day nestlings from their nests.
将15日龄雏鸟移出巢外，观察了亲鸟的喂雏方式和系列动作。
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。
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。
The food habit of little egret and cattle egret were analyzed by getting the food disgorged by nestlings.
通过雏鸟呕吐出的食物团分析了白鹭和牛背鹭的食物成分。
She's given an insect to one of her nestlings, but now this black-capped vireo mother has two more hungry mouths to feed.
这只黑头绿鹃妈妈已经喂了一只昆虫给自己一只未离巢的雏鸟，现在她又多了两张嗷嗷待哺的小鸟。
Of the ten nestlings that were examined, all were suspected to have been harmed by junk, and two were certainly killed by it.
他们对10只雏鸟进行分析之后怀疑它们均受到过垃圾的伤害，并且有2只因垃圾伤害而致死。
The survival of Northern Cardinal nestlings did not seem to be related to the presence of these nest predators or even to bird feeders.
北美红雀的生存状况似乎与巢捕食者甚至鸟类饲养者没有关系。 但美国罗宾斯讲述了一个不同的故事。
Californian condors appear to have a penchant for collecting pieces of junk, incorporating them into their nests, and feeding them to their nestlings.
加州秃鹫似乎有采集垃圾碎片的强烈嗜好，秃鹫将这些碎片置于自己的窝巢并把它们当做食物喂给雏鸟吃。
They are a group of children, grow deep in the mountains of the nestlings, they use spring like eyes to look at the world, look forward to a sensitive.
孩子，他们是一群成长在大山深处的雏鸟，他们用清泉般的双眼审视着这个世界，憧憬着又敏感着。
Among barn swallows, that have been extensively studied, about a quarter of the nestlings were sired by a male other than the mate, according to genetic tests.
家雀一直以来都在被人类深入研究，基因测试表明，它们的幼崽约有四分之一来自配偶以外的其它雄性。
Results showed that the growth and development of White-Cheeked Starling's nestlings was divided into three period, the nestlings growth presented the "s" type curve.
结果表明：灰椋鸟雏鸟生长发育分为三个时期，雏鸟生长呈现“S”型曲线。
Hardly fastidious homemakers, the birds raise their nestlings in the dark on a layer of tiny fish bones regurgitated as pellets, then shattered with a perfunctory peck.
而亲鸟是几乎不会挑剔的主妇，它们会堆砌起细小的鱼骨头，然后很随意的捣碎这些堆砌物，在这层层鱼骨头形成的阴影里喂养嗷嗷待哺的小鸟。
As the birds' eggs started to hatch, they removed both the nestlings and the nests from the boxes. They microwaved the nests to kill any parasites and then returned both nests and nestlings.
在鸟蛋开始孵化时，他们将雏鸟和巢一同取出，用微波照射鸟巢，以杀死所有的寄生虫，然后再将雏鸟和巢放回鸟箱中。
As the birds' eggs started to hatch, they removed both the nestlings and the nests from the boxes. They microwaved the nests to kill any parasites and then returned both nests and nestlings.
在鸟蛋开始孵化时，他们将雏鸟和巢一同取出，用微波照射鸟巢，以杀死所有的寄生虫，然后再将雏鸟和巢放回鸟箱中。
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