Rock pigeons are recognized by the iridescence on their necks! They also have two black bars on their gray wings. These pigeons are not native to the Americas, and many wild pigeons are descended from domesticated pigeons released into the wild. They’re monogamous breeders and usually have two offspring per brood. Pigeons have been domesticated as homing pigeons, carrier pigeons, and even war pigeons. In fact, quite a few of the latter have received medals and awards for bravery.
https://www.inaturalist.org/observations/5485683