You can make a pretty gnarly blow gun with a length of 1/2" conduit, an ear plug, and 6" or so of sharpened stainless steel wire :-) You'll be proficient in no time!!! We had a pigeon problem where I used to work. They'd shite all over the equipment & hand rails. Management wouldn't do anything, so us nightshifters took action. Within a week every pigeon was gone! We spent many nights chasing down birds sporting several darts that just refused to die...couldn't leave any evidence behind :-) Don't even think about asking me how to play pigeon baseball!!!
:-)