Well, we've had a helmet pigeon at my job (animal control) for probably 7-8 months now, and I'm supposed to take him home to adopt on Friday. Up until now he's seemed very healthy. He was fine last week, I had the weekend off and didn't see him, went home sick on Monday so I didn't really see him then, was out sick yesterday, came in today and he's all puffed up with feathers all over the bottom of his cage, and the tips of some of his wing feathers look pretty tattered. I asked my coworker if something had happened, he said the pigeon started "pulling his feathers out" over the weekend. I *think* he's just assuming this because there are feathers everywhere, but if he had mites or lice would he pluck them and puff up? If he was just going through a molt or something could that explain the puffed appearance? He seems to be eating and drinking just fine, his droppings are normal. The only visible indicators of a problem are the scattered feathers, the puffiness and he keeps perching on one leg...something I very seldom see him do. What could be the issue? What course of treatment should I try? Thank you!