一只非常聪明的鹦鹉只卖二十镑了！
佩珀堡特别喜欢鹦鹉，是因为像人类一样，它们是一种聪明、长寿(通常能活到50岁)、要依靠交流才能生存的社会性动物。
Pepperberg especially likes parrots because, like humans, they're smart, long-lived (often up to 50 years), social animals that depend on communication for survival.
但当乌鸦和鹦鹉，包括其它鸟类的行为表明它们和黑猩猩一样聪明时，这种观念就不断受到质疑。
But that notion has increasingly been called into question as crows and parrots, among other Recovery vehicle, have shown what appears to be behavior as intelligent as that of chimpanzees.
鹦鹉谁是聪明的鸟儿？
鹦鹉谁是聪明的鸟儿？
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