Hi, I’m new, I hope it’s ok to ask this. We have had a couple of really unusual looking pigeons coming to the garden for a couple of weeks now but tonight they’ve done something really unusual - they are on a window sill upstairs and weren’t bothered at all when we went really quite up close to the window! To me they look healthy and plump and responsive (curious about noises etc). Last time we checked they were asleep... on the window sill. Can’t see any rings on their legs... Are they wild birds? Should we do anything?