The first 2 are the same pullet/roo It has been real "pullety" but I wonder because of the little rusty spots developing on the wing area.. The 3rd one has developed a lot of red/rust early in development....figured that would mean roo... The last one is "buttercup"....just seemed to fit after all she went thru.Sorry to hear about the coyote attack, those things are terrible.
The first one, the black and white, is looking boyish to me. Are there two pictures of him?
The one with brown and multi colored speckles has a more even pattern along the back and wings, thinking girl for that one.
Eta: is that SNOW I see on the ground!?