Hi - have a pigeon who is ill, don't know what to do. Have been feeding about fifty pigeons on the roof outside the window of my computer room for two years, and this year some of the young pigeons decided it was okay to come in the window and hang out (there are always some spilled seeds on the floor). This morning one of them came in sat on my desk, fluffed up her feathers and tucked her head into them. At one point she jumped down on the floor and pecked at some seeds, but only halfheartedly. Also, a membrane kept coming up over her eyes (which is a sign of illness in cats). I had to go out, and when I came back, she was still sitting there hunched up, and shivering occasionally. She was easy to catch, not interested in flying (but she's not injured, not obviously, anyway). Got her a box, put some water and food (small seeds) in it. Think she ate some; they were disturbed, anyway. Decided to try to give her water in a syringe - she must have been really dehydrated - drank five full syringes. She perked up after that, but she's still not behaving like a normal pigeon. (The rest of them fly around, fight, eat a few seeds, poke around a bit and then go back outside.) Advice, please!