Perhaps you could find out if there is a local pigeon fanciers club Greyduster and ask if anyone would be willing to come to your garden to try to catch it.
We had a homing pigeon resting on our back bedroom windowsill for a few days 2 or 3 years ago. It eventually flew off, but only after I gradually and gently opened the window out, inch by inch, thereby reducing the amount of room on the sill for him to perch! I think he was just resting and, once recovered, was happy to continue his journey. Or her journey, mustn't be sexist 
Why university are always avoiding responsibility? And can’t be held accountable?
Trump - Carlson on Trump's nihilism.


