One of these birds...

is not like the others,
One of these birds just doesn't belong,
Can you tell which bird is not like the others
By the time I finish my song?

Did you guess which bird was not like the others?
Did you guess which bird just doesn't belong?
If you guessed this one is not like the others,
Then you're absolutely...right!

Ah, Sesame Street is timeless.. :)