I don't know what's wrong with you ppl!
"Bird" or "birds" has been Brit slang for women for years, probably decades. If the expression were to become popular in the US it would have happened years ago.
The band's name is not birds, it's
The Byrds! They've got some good songs. I remember them when they hit the charts. The ones I remember best are
Turn! Turn! Turn! (1965) and
Mr. Tambourine Man (1965). Okay I know that many of you weren't born then...
The movie is
The Birds (1965), directed by one of the greatest movie directors of all time, Alfred Hitchcock. Starring Rod Taylor, Tippi Hedren, Suzanne Pleshette... The mood of this horror thriller was incredibly intense!!!