the birds

The birds are additionally protected in the reserves at Birsay

鸟类在伯赛的保护区尤其受到保护。

Long , long ago there was a war between the birds and beasts .

很久很久以前，鸟类和兽类间发生了一场战争。

The birds are found in over 70 different localities .

现已发现这种鸟栖息在70多个不同的地区。

The birds circled in a slow spiral above the house .

鸟儿在房子上空缓缓盘旋。

The birds were singing outside my window .

鸟儿在我窗外啼啭。

The birds ' nests are lined with tightly packed leaves .

鸟巢有一层压得密密实实的树叶。

The birds flew around and then resettled on the pond .

鸟儿飞来飞去，然后落在池塘边上。

We watched the birds skimming over the lake .

我们看着鸟儿贴着湖面飞过。

We looked at the birds through binoculars .

我们用双筒望远镜观鸟。

Feeding is not a problem because the birds range over such a large area

这种鸟活动的范围很大，因此觅食不成问题。

We brought along pieces of old bread and fed the birds

我们拿了几片陈面包来喂鸟。

The birds also attack crops when the opportunity arises .

一有机会鸟儿们也会破坏庄稼。

Since the birds interbreed they cannot be classed as different species

由于这些鸟进行杂交繁殖，不能把它们归为不同的物种。

The birds live mainly on nectar .

这些鸟主要以花蜜为食。

The birds were active , whirring and fluttering among the trees .

鸟儿们很活跃，在树林中呼呼地飞来飞去。

The birds smashed into the top of their cages in fright

鸟儿惊恐地冲过去，撞到了笼子顶上。

I kept the birds indoors all winter and introduced them into an aviary the following June

整个冬天我把鸟关在室内，然后在接下来的6月份把它们放入鸟类饲养场饲养。

The birds will winter outside in an aviary

鸟儿们将在外面的大鸟笼里过冬。

The birds returned to their nests and continued to incubate the eggs .

鸟儿回到巢里继续孵卵。

The birds must be weighed , sexed and tagged .

必须对这些鸟称重，辨识雌雄并挂上标牌。

The birds infect the milk .

鸟污染了牛奶。

The birds cling to the wall and nibble at the brickwork .

鸟儿们紧贴在墙上，啄着砖缝。

During these periods the birds will lie on the cage floor as if trying to lay or hatch eggs .

这些时期，鸟儿会趴在笼底，好像在下蛋或孵蛋。

The birds were in immature plumage

这些鸟儿羽翅未全。

The birds sang , the bees hummed

鸟儿叫，蜂儿鸣。

The birds used to be reared in captivity .

这些鸟曾经是笼养的。

The birds are beating their wings .

鸟儿扑扇着翅膀。

The birds chirp merrily at the top of tree .

鸟儿在枝头欢快地啾啾鸣唱。

The birds are busy building their nests .

小鸟们在忙着搭窝。

The birds got entangled in the nets .

鸟儿被网缠住了。