wounded pigeon

One tried to make a very untidy nest in the plants on our pergola - just outside the bedroom window last year Fennel. It was only in the early stages so I nudged it on its way with a tumbler or two of water. There's a much better tree not far away.

They don’t “live” in a nest unless they have eggs or young, they roost in a trees or bush, maybe a barn or large shed.
Racing pigeons will have rings on their legs, there are plenty of feral town pigeons of all colours as opposed to wild pigeons. They get injured by cars, caught by cats and birds of prey, it’s a dangerous life being a pigeon.

NiceGranny - thanks for asking - still no further sightings, except husband thought he saw him flying with the others.
He could still fly a bit, so hopefully built up strength.
Interesting about nests - they seem to breed so prolifically, I thought they must have some protection for the eggs.
As for racing/carrier pigeons, I had some interesting correspondence with someone who had managed to get hold of messages carried between UK and Resistance workers in France during WW2. I think one pigeon even got an award!

Pigeons have an untidy nest of twigs which they abandon when the chicks have fledged

Here's the pigeon who was awarded the Dickin medal:
www.bbc.co.uk/news/uk-scotland-tayside-central-17138990