The band is labeled with a tracking number, and there is a phone number on the band for people to call for free, to report a banded bird they've found or recaptured.
这只手环上有一个追踪号码，还有一个人们可以免费拨打的电话号码，举报他们发现或捕获的标记雀鸟。
2
That mother bird—we might call her Mrs. Thrush—is not very good at math. So when she returns to sit on her eggs, she doesn’t notice there is an extra large egg in the nest.
Therefore the first bird that evolved into what we would call a chicken, probably in prehistoric times, must have first existed as an embryo inside an egg.