我猜想当时应该是这只黄鼠狼想吃掉啄木鸟，于是跳到它的背上，然后啄木鸟立刻飞了起来。
I imagine the weasel gave it a go, jumped on its back and then the woodpecker took off.
啄木鸟在啄木头的时候，每秒头部向树撞击20次，你估计觉得这样它会需要一个坚如钢铁的脑袋来得以生存，但事实上，啄木鸟的脑袋是相对较软的，每只啄木鸟在出生时，鸟喙后长有一个软的海棉状的物质，用来吸收啄木头时所产生的震动。
Instead, the reality is that woodpecker heads are relatively soft. Each bird is born with a soft, sponge-like mass behind its beak that absorbs the shock created by pecking.
这里是唯一生活着全部九种欧洲啄木鸟的地方。他于是意识到，有些啄木鸟的品种只栖身于中空的、濒临死亡的树木中。
It was the only place left with all nine European woodpecker species, because, he realized, some of them only nest in hollow, dying trees.
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