We are a commune of inquiring, skeptical, politically centrist, capitalist, anglophile, traditionalist New England Yankee humans, humanoids, and animals with many interests beyond and above politics. Each of us has had a high-school education (or GED), but all had ADD so didn't pay attention very well, especially the dogs. Each one of us does "try my best to be just like I am," and none of us enjoys working for others, including for Maggie, from whom we receive neither a nickel nor a dime. Freedom from nags, cranks, government, do-gooders, control-freaks and idiots is all that we ask for.
The pigeon of cities and barns is actually the European Rock Dove. It's been introduced all around the world. In its natural wild state it was partial to cliffs and mountains so urban settings are comfortable for the species.
The Rock Dove has been domesticated and bred for thousands of years, so today there is much variety in feral pigeons. People raised them in dovecotes.
Perhaps the best use of pigeons is for shooting practice. I've done that. Good fun. Second best, raising them for squab. Squab is delicious. I recommend it if you can find it on a menu. A colleague of mine used to raise pigeons. He would serve rare squab breast on top of a sauteed squab liver, on a bed of lentils. Wonderful.
Pigeons are a favored food of Peregrine Falcons. They knock the stuffing out of them in the air, then catch them on their way down.
Peregrine falcons have been known to roost amidst the high rise towers of downtown Calgary. And Calgary has a fair few pigeons. It's not unknown for office workers, having their lunch, to be "treated" to the sight of a falcon going full bore after - and taking down - it's own flying lunch. As well, certain office towers were found to be particularly suitable for caching excess prey; some lucky workers had their outside window ledges lined with dead birds.