Lyrebird: This beautiful bird does such good mimicry, you will be amazed at its ability. It produces sounds such as the calls of other birds, chainsaws, camera shutters, camera with motor drive, and even car alarms. Seriously!!!!  I have seen nothing like this before. Truly a remarkable bird.

Watch it in action:
http://www.youtube.com/watch?v=VjE0Kdfos4Y

Can we forget Parrots in such discussions, nah:
http://www.youtube.com/watch?v=1sXENI8tpJE
http://www.youtube.com/watch?v=QVVzUxXxQZU

It is not only fine feathers that make fine birds.
— Aesop