I have 5 chickens in my flock, i just recently bought the last two. a gorgeous white silkie, who is perfectly fine and a creole polish. i bought the two new ones 2 weeks ago (they are approx 8-12 weeks) and the polish seems to be sick. she is lethargic. not walking around she seems to have SLIGHT balance problems.... nothing drastic, just cant perch as strongly as the others her stool is pretty watery. looks brown with small grits. she is laying down a lot with her head on the ground, which worries me, and sometimes keeps her mouth open for extended periods of time. like shes hot. shes getting enough draft i believe and the weather today and the last 3 days has been great. 70 deg she seems to be eating enough and drinking should i be worried about my girl??