
That's a MOCKINGBIRD.
The Big Bang Theory Season 5, Episode 17

(MOCKINGBIRD continues singing)
The Big Bang Theory Season 5, Episode 17

(MOCKINGBIRD whistling)
The Big Bang Theory Season 5, Episode 17

A MOCKINGBIRD.
Game of Thrones Season 2, Episode 1

(MOCKINGBIRD whistles)
And you...
The Big Bang Theory Season 5, Episode 17