Apologies for the very late reply 😅 thank you for the info, there is a research paper somewhere that mentions White leghorns with a mutation giving some birds extra free vertebrae in the tail. I will try and find it.
Beautiful birds! love the horizontal look to the tails, i'm looking more for information on the tail itself (the meaty and bony true tail) not the feathers attached to it but thank you for the reply.
I'm new to chickens in general and am getting into breeding and chicken habitat design. Does anyone with experience in raising and/or butchering have any input on true tail length (free caudal vertebrae) variation between breeds?