Missing tail.

[Kate the great]

I am wondering if there is a disease or a condition that would cause chickens to not grow their tail feathers. I have five americana chickens that have zero tail feathers. One of the five has one feather. They were never formed from the time that we purchased them as day old chicks.

 

[MysteryChicken]

Pictures?

How old?

 

[WhySayWhat]

I know I came across a thread yesterday about "rumpless" hens, here is a link to one about an EE...a few post down is a decent description of how to tell!