Body shape curiosity

[RUNuts]

Pardon my question. I have a bunch of Ideal Hatchery stock. The Barred Rocks and red girls (production reds?) have a poofy backside. Looking at other pictures, these are the only ones that poof like this. Is this peculiar to Ideal? Or am I being self conscious?

Talking about the small back going into the poof before the tail. The leghorns don't have it, but the others do.

 

[Little Chicken Girl]

My sex-links and rhode island Red and Dorking cross have 'the poof' saddles too.
It's more pronounced on my oldest, largest hens with the straightest tails and is further more pronounced after molting.

 

[aart]

That's called the 'cushion' in chicken SOP parlance.
It can vary from breed to breed, line to line, and individual to individual.
As long as you are not showing these birds to SOP standards, I'd not worry about it.

 

[RUNuts]

No worries! These girls are beautiful although demanding.

More curiosity than anything but like you say, not standard.