If you do manage eventually to catch your pigeon I would pair him with one in you loft and not release him until he has raised at least one batch of squabs with his mate.
I feed whole corn through the winter to my pigeons helps them combat the cold.
As mentioned by other Backyard fanciers not a good idea to let them breed during the winter.
This is what a "FIVE DAY" old squab looks like.
1) A one day old pigeon is "BLIND" not the size of the egg.
2) Would require "HAND" feedings "EVERY 2 HOURS"!
3) Food can not be to "TOO HOT OR TOO COLD".
4) Must be kept "WARM" in addition.
5) Jump started with"pigeon milk"that can not be...
I never owned Roller pigeons.
I know a fellow pigeon fancier that has a kit of them and enjoys watching their flights and so do I.
However their are Parlour Rollers that have been bred from Roller pigeons for so long that they have actually lost the ability to fly.
I really can not fathom...
I can sense you have a "KIND" heart and you may think of me as "cruel and insensitive."
Without knowing how the bird maneuvers;it's overall health or condition; and how it is adapting to it's situation.
I would be considering culling the bird.
i do not see any quality of life for this bird...
That is terrific news happy for you and your pigeon too.
In sexing a pigeon first exclude the middle toe and disregard it. If the two adjacent toes from the middle toe are the same length it is female. If one is noticeable longer it is male.
Handling different birds you develop and instinct...