鸟儿如何筑巢

Spring is an important time of yearfor birds to lay2 eggs and raising theirbabies. But first things first they need tobuild their nests. Birds don’t live innests， but they build them to have a safeplace to lay and incubate3 their eggs andto raise their babies.

Birds use many materials4 to buildtheir nests， for example， sticks， lichen，spider silk， bark and mud. Different birdsmake different nests. Some nests are assimple as a scrape5 on the ground， othersare carefully6 built.

One kind of nest you might usuallysee is called a cup nest， as it’s the style7made by many garden birds， includingrobins and blackbirds.

Stay well away from their nests. Youcan also help the birds in spring byleaving behind the materials they need tobuild nests， such as sticks or dry grass.

The time it takes for a bird to buildits nest depends8 not only on the kind ofbird but also on its living place. Birdswill change theirnest -making stylewhen something isdifferent aroundthem， such as howmany parasites9there might be.

As our towns grow， we’re cominginto close contact with birds so it’s moreoften to find human-made10 materials inbirds’nests. They will be found more inthe nests of land11 birds than in those ofmarine12 ones.

Everything about making nests is useful， so we can know more about birds.

春天是一年中鸟类产卵和哺育幼鸟的重要时期。但是首先，它们需要筑巢。鸟类不在巢中生活，它们建造自己的巢是为了有一个安全的地方来产卵和孵化它们的蛋，并养育它们的孩子。

鸟儿用许多材料筑巢，例如树枝、地衣、蜘蛛丝、树皮和泥土。不同的鸟做不同的窝，有些巢穴就像在地上刮出的洞一样简陋，有些则是精心建造的。

你可能经常看到一种被称为杯状巢的鸟巢，因为这是许多花园鸟类筑的样式，包括知更鸟和乌鸫。

请远离鸟儿的巢穴。你也可以在春天留下筑巢所需的材料来帮助它们，比如树枝或干草。

一只鸟筑巢所需的时间不仅取决于鸟的种类，还取决于它居住的地方。当周围情况———比如寄生虫的潜在数量———发生变化时，鸟儿会改变它们的筑巢方式。

随着我们城镇的发展，我们与鸟类的接触越来越密切，因此在鸟巢中发现人造材料的频率越来越高。它们更多会出现在陆地鸟类的巢中，而不是海洋鸟类的巢中。

关于筑巢的一切信息都是有用的，这样我们就可以更了解鸟类。