they say you can never show the hens there cocks too much which i think is true unlike the cocks as they tend to sulk if they see too much of the hen if yiou have a problem with hens pairng up either lock hens up,or mesh floor with poles as perches & another reason is put 1cock in with a hen you dont race & they will rule the floor and chace anything off the floor that will stop em pairing up