This Wood Pigeon with a damaged or deformed or injured eye has been around Singleton Park, Swansea, for a while:
I tried attaching my 500mm lens to an Olympus Pen compact camera, via an adaptor, for this video. A bit awkward, as there is no autofocus with this combination, so needs a fairly static subject, but I did my best:
Anyone know what might have caused that eye condition? Looks painful!