Wood Pigeons trapped in Church N London

Hi I have 2 wood pigeons in a chapel in north london. It’s gothic so they are up very high roosting in the organ loft.. I think they may have walked in the doors when we were trying to deal with the floods since Monday. don’t think they will ever come down to ground level willingly which is the only way to get out.
Failed to catch after Sunday’s service. I’m sure they are hungry and thirsty. Now people are talking about shooting them as the only solution! Please are there any organisations that can help us deal with them humanely. 
  • It would be interesting seeing someone carrying a gun into a London church in these strange times. It would need to be a reasonably powerful gun, pigeons are not always easy to shoot.
  • Don’t worry we won’t be harming them in any way, just want them out for their welfare. I have passed on the link to the church staff now back from holiday @ internetman to londonwildlife and within that link there are pigeon specialists who really care about them, which is great. RSPCA isn’t much help, they were no help at all with a scared stray dog we found on a walk last year unless we caught him ourselves, and we lost him in woods. Pandemic issues and so much to do I suppose. These woodies are fat and sassy! I will report back when I get a chance.
  • I was talking to our local council pest control officer last night and he suggests that you contact his counterpart in your area, He says these people usually have their own ideas of dealing with such problems that do not mean killing the bird
  • Well, all is now fine, they apparently squeezed themselves out a tiny window we managed to get open high up. Maybe they were a bit thinner! As for the RSPCA, they offer help if you have an injured animal actually in your hands, or cruelty to report but they are not set up to help with every situation, including this one. That has been my experience. It's great we now have resources to contact regarding pigeons in particular, and know that the pigeons may have enough sense to leave by the nearest exit if we are patient with them.