雄鸟的头上有明显的白色斑纹。
雄鸟喙呈红色，有别于雌鸟。
The male bird is distinguished from the female by its red beak.
雄鸟的头形有点特别。
雄鸟喙上有一个红点。
雄鸟和雌鸟轮流伏窝。
The male and female birds take turns in sitting on the eggs.
雄鸟有美丽的尾羽。
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.
通常雄鸟体形较大，喙较短。
雄鸟黄色的喙是与雌鸟相区别的主要特征。
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.
雄鸟在雌鸟面前趾高气扬地走着。
根据黄色的羽冠可辨认出雄鸟。
雄鸟鼻包为淡蓝色，雌鸟为肉色。
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.
那种鸟雄鸟的喙呈橙色，与雌鸟不同。
这些斑点只有在成年的雄鸟身上才能看到。
雄鸟都会通过聆听父亲歌声学会如何唱一首特别的歌谣。
Only the males sing, and they learn a particular song by listening to their fathers.
以歌唱著名的美洲戴菊鸟，其雄鸟有红色头冠。
American kinglet with a notable song and in the male a red crown patch.
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.
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.
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.
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.
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.
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