We keep out Giant Runts, Rollers, and Ringneck in the same loft. All of our Pigeons get along well. And for the most part, our Ringnecks get along with the Pigeons. We do have two males, who have a thing for being agressive towards the Pigeons, and have had to rescue them. We now keep them in the House. Like any animals, it all depends on their personality.