One of my lil SLW roosters is not growing he's 6 weeks old but he looks like he's only a week old his brother and sister r fine and big with all their feathers but this lil guy still looks like new hatch my silkies i just hatched out r passing him in growing whats wrong with the lil guy pls help he eats and drinks but most time i do find him by his self or next to my turkey babies he's been like this for the past week PLS HELP