I have two pet indoor roos (and only these two). They are best buddies. Both are a little over a year old. The photo is of Peeper. His whole life, he's liked to stand with his wings slightly out. His wings work normally, he is healthy. He doesn't do it when he's eating, or walking around, sitting or stretching his wings. Only when he's standing still for any length of time. My other roo doesn't do this. Is this just a personal quirk or is there some standard chicken reason for this? His wings are clipped at the moment (he thought it was a great idea to try to fly up into the ceiling fan!) but he did it when his wings weren't clipped also.