I gave our 9 week old chickens a bowl of wet feed (mash). They all went absolutely nuts over it! After eating it I noticed one of them had a piece of her beak damaged and several others had smaller red spots on their beaks. The only thing I can think of is they were eating so aggressively and trying to wipe off the food that got stuck to their beaks and hurt themselves that way? Has anyone else experienced this? Pic attached of injured beak.