Twenty years ago I was trapping pigeons, on the roof of a friend's building to use for dog training and a limited live bird shoot. When found out, the City and LEO had a real problem with my doing this to those "lovely" birds. So I was forced to stop. When I found out later they city was using rat poison to reduce the pigeon numbers I had no problem letting others learn of their actions. It was not hard. Birds were dropping dead every where.
They should have let me deal with the problem for free. They ended up hiring someone to trap and relocate the birds. Didn't work. Surprise, surprise the birds flew back home, often faster than the person who was releasing them. A pest only stops being a pest when dead.
