I raised a flock for several years. Pigeons are easy to keep - as long as you keep their coop clean they will stay healthy. Obviously they are prolific breeders -- I started out with three and within three years had about 36 -- and that was after culling my flock , frequently, for squab. Delicious.
I had white ones, rollers, and they did well. Also trapped a few of the street pigeons; after some isolation and antibiotics in their water they did an easy transition to my flock.
The cool thing about them is that, once they start breeding, you can pretty much open up the coop and let them come and go as they please. Very nice to see that flock coming home in the afternoon. Yes, you will lose some to hawks.
If you are going to raise pigeons, you may also want to consider Eurasian collard or ring-necked doves. I also had a group of those (heck, I may be the one responsible for introducing them to N.FL !) -- same deal, easy to keep, prolific, delicious, and since they are non-native you can use them for training dogs. You can buy em at livestock auctions or trap some feral ones if they are in your area....
Collard doves are spreading , at least here in FL and GA. Shot one on a GA dove hunt last year; They do well in beach environments, btw