Bird Geniuses:The Smart Crows鸟界天才：聪明的乌鸦

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What is the smartest animal on the planet？ Many people think of elephants and their incredible memories or dolphins with their large， complex brains. One of the most surprisingly clever animals is a black bird seen almost everywhere in the world—the crow. The birds’ sophisticated brains are capable of performing amazing feats of memory and problem-solving.

地球上什么动物最聪明呢？很多人会想到大象和它们绝佳的记忆力，或是拥有庞大、复杂大脑的海豚。（剩余1982字）