But an unguarded chick is desperately vulnerable.

没有保护的鸟极为脆弱。

They have one baby bird, or chick, every two years.

他们每两年生一幼鸟或鸟。

If her chicks are going to hatch, she must stay on the nest.

要使鸟孵化它得呆在巢上。

Fledging is the moment when the baby bird leaves the nest.

鸟长出飞羽时，正是它们离巢的时刻。

The young chicks fly out to sea about five months after they hatch.

鸟孵化后大约五个月就会飞向大海。

Rats eat bird eggs, chicks and even adult birds.

老鼠会食用鸟蛋、鸟、甚至成年鸟类。

This chick is a sign of hope in difficult times.

在艰困时期，鸟是望的。

If the chicks aren't fed regularly, then they will die.

如果鸟不能定期得到喂食，它们就无法存活。

She says the example song might come from the chick's father.

她表示，典型歌曲可能来自于鸟的父亲。

In late March, more than 100 painted stork chicks were also poached in Cambodia.

3月下旬，柬埔寨也有100多彩绘鹳鸟被偷猎。

" The baby bird had to struggle to spread its wings and fly" .

" 鸟不得不挣扎着展开翅膀飞起来。"

Skuas harass the colony, hoping to snatch a chick.

贼鸥不断侵扰着企鹅种群，望能趁机叼走一鸟。

New-born chicks can then imitate their mom's call within a few days of entering the world.

新生的鸟在出生后几天内就能模仿妈妈的叫声。

And, it turns out, same goes for songbirds in learning their duets.

而且事实也表明，鸣鸟也是在鸟时期学习的“二重唱”。

And over time, the baby bird tweaks that tweet, to make it its own.

随着时间的推移，鸟不断调整种叫声，然后演变成它自己的叫声。

And we do know that this past breeding season, there were no surviving chicks in the wild.

我们还掌握到，在刚刚过去的繁殖季节，野外没有幸存的鸟。

As their chicks grow, so the pisonia trees develop seeds that are sticky and equipped with hooks.

随着鸟一天天长大，腺果藤树长出了黏黏的带有倒钩的种子。

Wisdom is at least 68 years old and has raised at least 31 baby birds, or chicks.

智慧至少有68岁高龄了，她生了至少31小鸟，也称鸟。

Caring for newborn chicks while ensuring they don't become attached to humans requires thinking outside the box.

照顾新生的鸟，同时确保它们不会依附于人类，需要跳出固有思维模式。

After two months of feeding the chick, it begins to feed itself, but the parents still supplement its diet.

经过两个月的喂养，鸟开始自己进食，但父母仍会补充它的饮食。