Two days ago, when doing my nightly count and closing the coop door, I found us one hen short. I found her under the coop, but since our coop is 10x16 I really had no way to get her. Occasionally we have one or two hens that I find in a short tree and I have to put them in the coop, so I wasn't real worried. Last night she was back on the roosts with everyone else. Today, she was not looking very good. The wife walked up to her, and she didn't even try to move, she just laid there on the ground. The wife put her next to the water container, and she said that she guzzled the water as fast as she could. We gave her some Poly-Visol. She pretty much stayed near the water container all day. I did see her on her feet taking a drink earlier in the afternoon. When I did tonight's count, she was still right next to the water container. When I went to pick her up, she did get up and try to move, but it wasn't real fast. Soon I got my hands around her, water just poured out of her beak. I don't feel anything in her crop. She is less than a year old. I am trying to figure out what it could be. She is not showing any signs of anything other than drinking a lot, and not wanting to walk around. I did not feel anything like an egg stuck near her vent. I live in CT and for the last prob 4-5 days, it's been in the 90's and with the dew point in the 70's the heat index is saying it feels like 104-107 degrees. Could she just be overheating?