Corrected entry: In the episode "No Chris Left Behind," when Peter and Lois are talking about Chris in the kitchen, Peter spots the chicken and then the chicken crashes through the window. After a few shots of fighting, they then both crash through the same window, but the break in the window from the chicken is missing.
Corrected entry: Peter has three fights with the chicken. Just before the first fight the chicken tells Peter to pick up a coupon notice. In that one shot, you can see the chicken's head shows the man inside, but in any other scene with the chicken, his head is covered.
Correction: The chicken is just a chicken, it's not a man in a suit.
Correction: That was not the same window. The chicken came in through the back kitchen window but Peter and the Chicken went back out through the front living room window.