i have a breeding trio, my rooster and his 2 girl which are sisters have always shared a nesting box and the babies belong to both of the sisters so far 5 healthy happy chicks, this morning one chick is gone no trace of him my chickens do not free roan the coop and run are solid there is no sign of anything getting in or out will chickens turn on their chicks?? i did notice that one of the moms was being mean to the youngest one yesterday but no sign of the little guy today i thought that there would be prove left behind if the older chickens ate him, and the only ones in this coop are the 2 moms and the dad, they have been the cutest little family, what could have happened to my lil guy????