I noticed last night she was lethargic, distancing herself from the others, really not moving around much. it's been chilly so I picked her up and she was really cold. we put the heat lamp on in the coop but she wouldn't stay under it. so we brought her inside and set her up under a heat lamp. she's not doing much, slumped over, laying her head down. they were born 3/22/17 so about 7 weeks, she is much smaller than the others, I put the electrolytes in her water. and in the other chickens water outside. I hope she makes it through the day, no one is home. Any suggestions would be helpful please. I am very worried about her. and this is all new to me.