i bought and raised 14 baby chicks from a feed store. they are about 3 mnths old. i then bought 33 adult hens and roosters of various ages and sizes. i put them all in my chicken pen together and all was fine the 1st night. the 2nd night 2 banty seabrites were gone, nothing but feathers. i moved the bantys into smaller wire pens of their own breeds and left the large breeds together.the next morning 11 dead and missing chickens,some had heads and butts missing some were completely gone and some were laying in the yard. all my bantams are dead and gone. so i locked up all the big ones and tried again. they were fine or so i thought we watched closely all day as the hens played in their pen, when we went to feed them that evening 10 of my babies were gone , no feathers no nothing in day light with us in the yard! ! does anyone have any ideas on what it is???? or how to get rid of it???im down 21 chickens and desperate to stop what ever it is!!!!!