The cuckoo lays its eggs in other birds' nests.
杜鹃在其他鸟的巢中产蛋。
The birds' nests are lined with tightly packed leaves.
鸟巢有一层压得密密实实的树叶。
Some solitary bees make their nests in burrows in the soil.
一些独居的蜜蜂将它们的巢筑在土壤中的洞穴里。
The birds returned to their nests and continued to incubate the eggs.
那些鸟儿返巢继续孵卵。
They make nests in trees and roofs.
它们在树上，屋顶上安巢。
Some ants do not build nests at all.
一些蚂蚁并不筑巢。
The hens were sleeping on their nests.
母鸡们在窝里睡着了。
Beavers build dams and birds make nests.
海狸筑水坝，鸟筑巢。
And some birds do not build nests at all.
并且有些鸟根本不筑巢。
Do you see hundreds of nests in the trees?
你们有没有看到树上成百个鸟巢？
They found many birds' nests in the woods.
他们在树林里发现了许多鸟巢。
They need holes in riverbanks to make nests.
它们需要河岸上的洞穴去筑巢。
No hunting allowed, and no disturbing of nests.
不准打猎，也不准侵扰鸟窝。
"He knows all about eggs and nests," Mary went on.
“他知道关于蛋和鸟巢的一切。”玛丽接着说。
They infested half the nests with 60 hen fleas each.
他们往一半巢穴各放入60只鸡蚤。
They dig out nests in the riverbed and lay their eggs.
它们在河床上挖巢产卵。
And now, as we birds say, we build nests before laying eggs.
而现在，我们鸟儿说得好，先筑巢，后生蛋。
All the male penguins will build nests if the female penguins lay eggs.
如果雌性企鹅下蛋，所有的雄性企鹅都会筑巢。
The most common materials used for nests are grasses, branches and feathers.
筑巢最常用的材料是草、树枝和羽毛。
Some birds build their nests on the ground, while others bury their eggs under the ground.
有些鸟在地上筑巢，有些则把蛋埋在地下。
So if there are people or dogs on the beach, the eggs and fledglings in the nests are really vulnerable.
所以如果海滩上有人或狗，巢里的蛋和雏鸟就很容易受到伤害。
Those dinosaurs on the nests were probably adult males who wouldn't have needed calcium for making eggshells.
巢里的那些恐龙可能是成年雄性，不会需要用来制造蛋壳的钙。
Ulrich Mueller of Maryland and his colleagues genetically screened 862 different types of fungi taken from ants' nests.
马里兰州的乌利齐·米勒和他的同事从蚂蚁窝中提取了862种不同类型的真菌进行基因筛选。
When you look for nests and eggs in branches of the trees and bushes, remember that some nests may be right on your feet.
当你在树枝和灌木丛中寻找鸟巢和鸟蛋时，要记住，有些鸟巢可能就在你的脚边。
The ants therefore cultivate these fungi in their nests, bringing them leaves to feed on, and then use them as a source of food.
"因此，蚂蚁在它们的巢中培养这些菌类，用叶子喂养它们，然后把它们当作食物来源。
They also examined the fossilized bones of those three types of dinosaurs that were found on or near nests to determine their sex.
他们还研究了在巢穴里或巢穴附近发现的那三种恐龙的骨骼化石，以确定它们的性别。
Some 10,000 pairs of the birds, called fulmars, a kind of Arctic seabird, make their nests on Devon Island, north of the Arctic Circle.
在北极圈以北的德文岛上大约有一万对鸟在那里筑巢，它们被称为管鼻鹱，是一种北极海鸟。
Since adult dinosaur fossils have sometimes been discovered near or on top of nests, we've been looking at the dinosaur parenting behavior.
由于成年恐龙化石有时在巢穴附近或巢穴顶部被发现，我们一直在观察恐龙的育儿行为。
For the Saharan silver ant, crawling from their underground nests into the sun's brutal rays to hunt for food, this is the perfect time to seek lunch.
对于从地下的巢穴中爬到炙热的阳光下猎食的撒哈拉银蚁来说，这是寻找午餐的最佳时间。
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