Quote from Kramer in The Little Jerry
Jerry: Is that your "chicken" making all that noise? Kramer: Oh, Jerry loves the morning. Jerry: Who? Kramer: Little Jerry Seinfeld. I named my chicken after you. Jerry: Thanks. That's very sweet. But that is not a chicken. Kramer: Of course it is. I picked it out myself. Jerry: Well, you picked out a rooster. Kramer: Well, that would explain Little Jerry's poor egg production.