We are raising 3 turkeys since April--2 roosters and a hen. One of the white roosters wouldn't come out of the shelter this morning when the gate was opened to let them into the ranging area. I talked to him and he was standing facing the corner of the shed. He has always been the slowest (and largest) of the 3. Lately, he keeps his feathers all puffed out, almost like they are stuck, and they were puffed out as he was standing in the pen this morning. It has been hot, and all 3 pant. They always have shade and plenty of water. Any ideas?