I am one who has a dog and a bird. Sassy doesn't like Star, and Star hates Sassy. But they manage, somehow. They both know where they stand and Sassy understands if she ever harms Star, oh, will there be a big punishment, and NO that does not involve smacking or abuse.

I'm assuming Sammy has lived with you most of his life and is used to a neighorhood setting. He has probably never lived with chickens.

RIP chickie! I'm sorry about your loss Danielle.