I saw a post from Chookschick about a rumpless lakenvelder she is selling. I have a BR with no tail feathers, and I just assumed it was because he was behind in development due to being injured while hatching. (this was my first experience hatching) So is rumpless caused genetically? Does it happen occasionally in all breeds? He's 11 weeks old, and I have no plans on breeding him. (he's got crooked toes too) I'm just curious about the rumpless thing for future hatching. Thanks!