Hi! I'm not a bird watcher and I don't really have much of an interest in birds, although I have made a very unlikely friend in a Seagull who has been coming to my window (in a tower block) for the last 4/5 years. I have been calling him Bob for the last 5 years but I am not even sure if he is male or female. Searching online told me that its difficult to tell the difference and really only birdwatchers can, so I am looking for any help with possibly being able to gauge his sex. Any other information would be greatly appreciated, his potential age, I know he must be around 6? How long he may live for. How long they stay in the same area (I'm guessing his nest is around here).
Thanks in advance.
Thanks in advance.