"A lot of large carnivores tend to be cannibals -- lions, hyenas, alligators, polar bears, " researcher Nicholas Longrich told Discovery News.
“许多大型的食肉动物都有残食同类的倾向，如狮子，鬣狗，短吻鳄，北极熊，”研究员Nicholas Longrich告诉“探索·发现”。
"Other birds have weapons, but this is unlike any other," said Nicholas r. Longrich, a paleontologist at Yale and the study's lead author.
“其他鸟类也有武器，但是这种鸟和其他任何鸟类都不一样。”耶鲁大学古生物学者尼可拉斯•隆里奇(Nicholasr.Longrich)博士说，尼可拉斯•隆里奇博士是这项研究的领头人。
"Other birds have weapons, but this is unlike any other," said Nicholas r. Longrich, a paleontologist at Yale and the study's lead author.
“其他鸟类也有武器，但是这种鸟和其他任何鸟类都不一样。”耶鲁大学古生物学者尼可拉斯•隆里奇(Nicholasr.Longrich)博士说，尼可拉斯•隆里奇博士是这项研究的领头人。
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