Cool, glad to see more people interested in PIGEONS!!! Yes pigeons only breed in pairs And yes pigeons breed year round. And I don't know about separating them. (I leave them together all the time. And yes the aviary sounds great. But they need to fly quite abit. Both breeds are easy to breed an raise. You can google, youtube, what ever else you can think of. And you can find tons of info. Good Luck!!! And hopes this helps.