Bird-brain的意思|示意

But even among the smartest bird species, there's still natural variation in brain size.

但是，即使是最聪明的鸟类，它们的大脑尺寸也存在自然变化。

Mike was one of them. Olsen failed to completely decapitate the bird, missing the jugular vein and leaving one ear and most of the brain stem intact.

奥逊没有成功砍下麦克的头，没砍中咽喉脉，麦克其中一只耳朵和大部份的脑干还保持完整。

That is because a bird's brain is small. So, anyone with such a bird-sized brain was thought to be not that intelligent.

这是因为鸟的大脑很小，所以脑袋跟鸟一样大的人被认为不那么聪明。

Don't be such a bird brain. I know you can figure out what to do.

别这么笨脑筋，我知道你可以想出怎么做。

So research on bird brains could help explain what's going on in the human brain, says Jon Prather from the University of Wyoming.

所以，研究鸟类大脑有助于解释人类大脑中的类似状况，怀尔敏大学Jon Prather这样说道。

The brain of a bird does not have a neocortex.

鸟类大脑不具备大脑皮层。