If you didn't know what a lyrebird is then keep going and if you do know then its still worth reading on. Seems like you have no option there.
Okay then, lyrebird is a native Australian bird famous for mimicking sounds to lure and attract female bird. You will be amazed at the capability of this bird's vocal chord. Check out this video from the one and only David Attenborough.
Now that you've seen, heard and astonished by this awesome bird, check out this really funny spoof of this bird.