My family bought a few chicks from some guy who didn't seem to treat them well. They were in the heat without food or water, and all seemed weak and sickly. Today (a few days later) all seem to be doing better, except for one (the black one in the last photo). However, I am not sure what breeds these chickens are. Does anyone know what they could be? I am assuming they are mixes, but we have no clue.