Brahmas, including Buff, come in both Standard (aka Large Fowl) and Bantam. As far as where to get them, I'd ask over in the Brahma thread found here: https://www.backyardchickens.com/t/169790/brahma-thread/
or contact one of the Brahma Club officers off their website: http://www.americanbrahmaclub.org
or contact one of the Brahma Club officers off their website: http://www.americanbrahmaclub.org
