We recently built a new coop, (i was going to put pics up soon) and i had also gotten some new hens before that. I had integrated them into the old coop, along with Java, my lone RIR hen. I got one more RIR hen, a BR hen, a SLW poullet, a GLW poullet, a Black Comet poullet, and a Black/Red sex link poullet. Everything seemed fine until we moved them into our new coop with my young Cuckoo Moran poullet Ashi and my young RIR/Buff orp. Cross cockerel, Cairo (He is SO gorgeous, btw!). It started off with the hens becomming extremely aggressive towards the poullets and cockerel, but then suddenly one side of her face became very inflamed! This continued for awhile, and it has subsided to a degree. It is still alittle inflamed. Then, my BR hen has started sneezing! She sneezes very, very frequently! About the same time she started sneeziing, my cockerel started passing only diarreah. They are all eating some corn but mainly layers crumbles with added oyster shell (Not dusty at all, very high-grade food). They also get some watermelon/cantelope rines, and i pick them plenty of greens because they have killed all the grass in their run !!! Then just yesterday, while i was putting food in their feeder the young poullet Ashi suddenly fell down, and all of her feathers were on end, and her wings were splayed out. It was hot yesterday, but when she done that she wasnt panting..... Is anything wrong, or am i just overly worried about nothing? If there is, what can i do to help?