I'm going to guess that some of the yellow ones with the more rusty color on the back and white wing tips are red sex link hens (like the one at the very bottom of the 4th pic posted). Maybe some easter eggers in there too (the ones that are brown with a striped back. The black one with the white neck/chest has me stumped through, but cute!
Looks like on the third pic, the greyish one on the far right looks like it has olive legs, maybe an easter egger too