My three RIR were attacked yesterday in our yard by a stray dog. My daughter sent our dog out and chased him up the street, but we can't find one of the hens; the other two ended up back in the coop. Its been that sweltering heat and one of them must've had a bite of somekind, because we have a clump of feathers. This morning, I couldn't get them to come out of the coop - so I fed them in there and left the door open. The eventually came out, but just seem a mess. I'm concerned about their health due to the stress and the heat. Any suggestions?