In my opinion, if the chicken had lips, then yes, it could
whistle. But then again, how would it learn to whistle? Someone
would have to teach it. And why would a chicken want to whistle
anyway? To show off to the other birds? Or maybe it would cheer him
up on a gloomy day. . . nah! Could a chicken whistle if it had
lips? I guess the world will never know. . .