I just lost three chickens. I had them outside in a pen with plenty of water and food. They are seven weeks old. One was a little older - maybe ten week old bantam. The others were a RIR pullet and a BR cockerel. I went out to check on them and the roo was lying down. I picked him up and brought him inside and tried to hydrate him to no avail. His eyes were closed and his head drooping. Then I noticed my EE pullet looked similar so I brought her inside and she had bloody spots on her with nasty little flying gnat-like bugs sucking her blood. When I squished them they were full of blood. I hydrated her and she is okay so far. Then the RIR did the same thing, again the bugs, head drooping, eyes closed. Is it too hot for them? They had shade, and water. I'm at a loss. I don't want to lose anymore obviously. They are all inside now. I thought maybe they aren't feathered out enough and since we have so many bugs...they were just swarming them. Could it have been the bugs only?