I have a pigeon in my back garden that I first noticed yesterday when the dog tried to chase it. Instead of flying off it scurried to the back fence and tried to hide behind some dead tree and plant cuttings. Last night I couldn't see it but then this morning i opened my back door and it was sat very close to it, again it scurried off and hid behind some trees. This time I went after it and had a good look at it. It's not banded, just appears to be a wild pigeon that's unable to fly. There's no obvious sign of injury, it's wings seem okay and it flapped them in its rush to get away from me. It seems bright and alert, won't let me get near it. The only sign of any problem is its inability to fly for whatever reason. Any advice on what I can do or who I should be contacting?