If it's got little feathers on it's feet, I believe its most likely a partridge cochin. We wound up with one as well as this years mystery bird, had a hen and a roo in the past and both were great birds.
Oh my! Looks just like the free rare chick I got from McMurray as well. I will have to put up pics tomorrow of him or her... not sure the gender yet. He is about 6-8 weeks old now though. Very loud and went thru the worst naked butt phase. Lol. He's all feathered out now thou and looks like he's wearing chaps.