For pigeons, if you can get a hand-raised bird, they can be both beautiful and tame. Some breeds are generally more tame than others. Mookies may interest you as they are both pretty and pretty popular as a pet breed due to their more outgoing and friendly nature. Some of the pouters, like the pygmy pouter, are also good for that. Both are smaller pigeon breeds. I love the Lahores, but they are much larger! XD Cape doves sure are pretty, and ringneck doves have a lot of different color morphs and can be very gentle and tame. I am not sure on the heat requirements for any of the above.