Okay, so I’m not exactly sure what kind of chickens these are. I thought they were Partridge Rock, but one of my chicken cronies disagreed. The feathers are spectacular. Dark or light speckled gray sometimes with a white line down the middle and a darker gray edge. Two inches or longer in the medium, and smaller than two inches in the small. Our feathers are carefully washed, dried, put through a freeze/thaw cycle, and hand packaged. The Medium bags are @ 6 in x 3 in and have @ 25 feathers each.