Crows, magpies, mockingbirds, and starlings can also mimic human speech. You just don't hear them talking very often, since it's illegal to keep them as pets (in the US at least. I'm not sure about other countries). Therefore, they aren't exposed to humans enough to pick up their speech, or for us to hear them. However, those that live in zoos or nature centers have been known to talk.
I've been trying to teach the crow at the nature center where I volunteer to say "nevermore." (Her name is Eddie after Edgar Allen Poe. They thought she was male when they first adopted her). I haven't had much luck yet, though. She just laughs at me.
