These bluebirds are about 11 days old.

这些蓝色知更鸟才差不多11天大。

Male and females bluebirds both have orange breasts.

雄性知更鸟和雌性知更鸟都长着桔红色的胸脯.

I am attracted to the bluebirds because of their beauty.

我是被蓝色知更鸟的美吸引到了。

I'm gratified to know that I've helped the bluebirds increase their population.

很高兴能帮助扩大这种鸟的规模。

A volunteer naturalist , I was eager to tell him about the help bluebirds needed.

作为一名自告奋勇的博物学家，我迫不及待地想告诉他蓝鸟需要帮助。

Bluebirds, he would say, are harbingers of hope and triumph, renowned for family loyalty.

他常常说，蓝鸟是希望和胜利的前兆，以对家庭的忠诚而出名。

I've inspired many, many other people to help not only bluebirds, but other creatures as well.

激励了许许多多其他人加入帮助蓝鸟以及其他生物的队伍。

I monitor the boxes regularly to record the data of what goes on with the development of the nesting cycle of the bluebirds.

我会定期检查这些盒子的情况，记录那些鸟儿筑巢周期的变化情况。

Bluebirds, too delicate to survive deep winter here, now return to take advantage of the fist hatch of stone flies from the thawing river.

蓝知更鸟,太过精致以致于不能在这深冬里生存,现在回来利用其身体独特的优势从解冻的河流中觅食。