Here's my guess: Maybe they trained the chicken to pull the jukebox or piano or whatever that is, and when it did, they would throw scratch down. The chicken would scratch away at it, etc. Then after a million times of doing that, they threw the chicken in with the jukebox and it automatically pulled it, expecting scratch and so habitually started scratching for it.
That's just my guess, and I am by NO means a chicken trainer, lol! Funny video though!
Hi ~ I have actually looked this up before, its a pretty famous scene. I can't remember where I read it, but I read that the chicken was on a heated turntable??? I don't know though...it is silly lookin