I have 2 year old chickens, varius large breeds and this is what I found today....what the heck? It may be just over an inch long and has some weight to it although I haven't opened it...yet. Any ideas why this would happen? Now I do have 5 very young pullets, not of laying age that have access to the nesting boxes but I've never even seen them enter this coop so I really don't think it came from one of them. Btw, they are only 10 to 12 weeks old.