Maybe they are on a low fat diet. Funny idea for a sign though.
I met a rooster last year. It gave me the evil eye so I turned around and walked away.
I'll have to post another photo of the chickens, or roosters. This was a bizarre spot next to the road with a small graveyard and a barbecue area and pergola. And about 10-15 roosters which must live there. V. strange!