Okay, I don't know if that term applies to squeakerless pigeons, but they haven't had any luck brooding. This is my only pair. They're about 9 months old now. Had them since 3 months. They set 2 eggs in April, gave up after 3 weeks, and I candled. Nothing in the eggs. Clear. No development. They did the same thing in May. Same result. This time, they set 3 eggs, and during our few cool days this month, each bird was on eggs. SInce the hot spell came, it's just the male days, the female at night. They are on a largely millet diet, mixed red & white, with some dried greens, kelp, fruit bits, other seeds, etc. They have a 5x5x8' aviary to themselves in a detatched porch, with a nice 3 sf nesting area. They take a water w/ vinegar bath almost every day. They roll well & stroll about between attempts. Is the male just not doing his job right? Does this happen to parlor rollers? I had someone ask me if he's male. He definitely is male. Suggestions? I'd like them to have a reason to stay around when I roll them, as we have no grass on or property, just acres of forest to get lost in if they chose.