It's not rumpless. It has a tailbone. The feathers just are slow to growI now realize your 20230118_191652-jpg photo is a day old chicks. Unfortunately one of my chicks form 1/17/23 is STILL rumpless! Mind you they are from the bargain bin, breed unspecified. But I'm still hoping some of them are Sapphire Jewels. View attachment 3393286View attachment 3393287View attachment 3393290