For those of you who had questions about the details of a chicken saddle... Unfortunately I couldn't take better pictures of our saddles, because I loaned them out! I did find this excellent detailed pattern, however, and hopefully seeing the saddle off the chicken will be helpful.
I will note that the saddles we had were a denim fabric, did not have fusible interfacing, and were not folded in half like the pattern. If your problem is due to a rooster (ours was not), then I can see how a stronger fabric would be preferable.