Rooster Caught on Camera making Strange Noises While Cuddled

Chickens make all kinds of noises, the noise in the beginning is to indicate that he's upset over something, it's quite common, you also hear a chicken make that noise in the end of the video.
What's somewhat more unusual is the wide array of weird noises that Einstein makes while I cuddle with him. I think he might be trying to imitate chick noises, which his vocal cords just... can't.