Does anyone know what a black bottom chicken is?

[Dbl T in CO]

I have a neighbor that knows someone wanting to get rid of black bottom chickens. I've been told they have feathered feet. I have done some searches but nothing has turned up. Does anyone out there know anything about this chicken breed that can tell me something about them?

 

[4H kids and mom]

I only know of a few breeds with feathered feet/legs and those are Cochins and Brahmas (spelling?). Both come in a variety of colors, so a 'black bottom' is certainly possible! Photos will help us tell you for certain what you have.

 

[Dbl T in CO]

I'm going to look at the birds tomorrow and will take some pics and post them. Also taking my chicken breed catalog to see if that helps me identify them. Will let you know what I am able to come up with and see if you agree.