What's the connection between bird and dinosaur behavior?
鳥類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?
為什么科學家們想要了解更多關(guān)于恐龍滅絕的信息？