许多雄鸟的鲜艳羽毛被认为是为吸引雌鸟而进化来的。
The bright plumage of many male birds was thought to have evolved to attract females.
这就是为什么一些雄鸟长着充满异国情调的羽毛，为什么麋鹿拥有巨大的鹿角，为什么雄性招潮蟹有这么大的爪子的原因之一。
This is one of the reasons why some males birds have exotic plumes, why elk carry hefty antlers , and why male fiddler crabs have such large claws.
一种野鸭（绿头鸭），其雄鸟具有绿色的头和颈。大部分驯化了的家鸭都是绿头鸭的后裔。
A wild duck (Anas platyrhynchos) of which the male has a green head and neck. Most domestic ducks descend from the mallard.
雄鸟之间相互配对，共同筑巢，并一起生活数周。
Male-male pairs courted, built nests together and paired off for several weeks.
黄腹角雉雄鸟的求偶炫耀为典型的正面型。
The courtship display bhaviour of Cabot's Tragopan is of typical frontal displays.
他们提道，由于灯光让雄鸟睡眠少了，所以它们身体更加虚弱。
They note that the males may be weaker, because they get less sleep due to the lights.
雌鸟孵蛋差不多十六天，在这期间，雄鸟带回食物。
The female bird incubates the eggs for about sixteen days while the male brings food.
他们跟踪这些雄鸟，记录其鸣叫声并对其行为进行了密切观察。
They tracked these males, recorded their songs and monitored their behaviour.
这种鸟在外表上都很相似，但雄鸟的色泽更为鲜艳。
The birds are similar in appearance, but the male is more brightly colored.
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。
Male birds feed their young in some species, but they forget about them once they fly the coop.
但雄鸟食管里吸进排出的空气形成的叫声暴露了它们。
But the males' call, which is created by them filling their gullets with air and then releasing it, gives them away.
但是重度放牧或完全无放牧地区都导致了雌鸟比雄鸟更多。
But either heavy grazing or no grazing at all resulted in more females than males.
这里有许多的交谈和梳理，当雄鸟求爱时外表要像样一点嘛！
There was a lot of talking and grooming. A bloke has to look presentable when courting a bird!
Bischoff博士和她的同事在过去六年多总共研究了22只雄鸟。
Altogether, Dr Bischoff and her colleagues studied 22 males over the course of six years.
雄鸟更是乐不起来，在我儿子房里日日夜夜地哀鸣了几个礼拜。
The male cockatile was more unhappy, howling mournfully night and day for weeks from my son's room.
挑剔的雄鸟会在使用自己真的喜欢的鼓槌前尝试两到三根鼓槌。
The choosy males will try two or three different drumsticks before they settle on one they really like.
蓝鸫一种北美洲蓝鸫属鸣鸟，羽毛呈蓝色，雄鸟的胸多呈淡红色。
Any of several North American songbirds of the genus Sialia, having blue plumage and usually a rust-colored breast in the male.
如果雄鸟被拒绝，它必须将巢拆掉重新造一个，以赢得雌鸟的爱情。
If spurned, the male must take the nest apart and completely rebuild it in order to win the affections of the female.
传说雌鸟望向大海，寻找返航的水手，而雄鸟则回望利物浦，看看酒吧是否营业。
Legend has it that the female bird looks out to sea, to search for returning sailors; the male looks back towards Liverpool, to see if the pubs are open.
大咬鹃一种中美洲鸟，羽毛为鲜艳的铜绿色和红色，雄鸟有平滑的长尾覆羽。
A Central American bird that has brilliant bronze-green and red plumage and, in the male, long flowing tail feathers.
麻鸠，小鹭一种麻属和粘豆象属的涉水禽鸟，有斑驳的褐色羽毛，其雄鸟有。
Any of several wading birds of the genera Botaurus and Ixobrychus, having mottled, brownish plumage and a deep, booming cry in the male.
有了这样健康、有支持的食物供给，雌鸟能够专心孵育幼鸟而不用去帮助雄鸟。
With this healthy, reliable food supply, females can raise the hatchlings without help from the males.
红隼在占巢期雌雄鸟表现出明显的巢址选择行为和领域保护行为，主要以雌鸟为主。
Male and female display obvious nest-choosing and terrain-protecting behaviors in the occupying nest period, and it is mainly male.
此刻它正在一个鸟蹲在电线上，没有任何鸟和它讲话，我猜这该是一只错乱的雄鸟。
At the moment it is a bird squatting on the wire, there is no bird and its speech, and I think this is a disorder of the male.
黄鹂，金莺一种东半球黄鹂属燕雀鸟类，其雄鸟以黑色和鲜艳的黄色或桔黄色为特点。
Any of various old world passerine birds of the family oriolidae of which the males are characteristically black and bright yellow or orange.
当它们“活在灯下”，而非像其他亲戚一样“深居林中”时，有四种雄鸟清晨唱歌的时间显著提前了。
Males in four species started singing significantly earlier in the morning if they lived near streetlights than did their deep forest-dwelling kin.
我们挑了一只明黄色的雄鸟和一只奶白的雌鸟，给这对小鸟取名为：“阳光”和“雪球”。
Selecting a lively yellow male and a sweet white female, we named the youngsters Sunshine and Snowball.
我们挑了一只明黄色的雄鸟和一只奶白的雌鸟，给这对小鸟取名为：“阳光”和“雪球”。
Selecting a lively yellow male and a sweet white female, we named the youngsters Sunshine and Snowball.
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