I had an old pigeon keeper told me that there are deep rollers, and you can not breed deep rollers to each other, because the deep rollers like the rolling so much, they will roll into the ground and die! Now I was in High school, and he sold me a lot of pigeons which were not great rollers or racers, but they all came home. And maybe he was pulling my leg about the deep rollers. He lived on Yellowstone Whiskey and canned peaches and hjs personal homegrown tomatoes, lived to a 100! I wondered if any one has heard this or not? Truth or fable? I had had a lot of barn pigeons that came home after they nested. Pigeons require a lot of maintenance to do up keep, they are fairly dirty. I use quail because I hunt quail and not pigeons, the quail fly better, and recall better, and are cleaner. By the way I have hunted snipe, no, not your Grandma's nighttime exercise, and I was born at night but not last night!