What's the connection between bird and dinosaur behavior?

　　鳥(niǎo)類(lèi)和恐龍的行為之間有什么聯(lián)系呢？

　　Also, they were an extremely successful kind of dinosaur.

　　并且，它們作為恐龍而言是很成功的。

　　Why did scientists want more information about the dinosaur extinctions?

　　為什么科學(xué)家們想要了解更多關(guān)于恐龍滅絕的信息？