I have three chickens that my husband brought home from work (he works at a school, and a science class hatched them out) about two weeks ago. They were approx. 2-3 weeks old when he brought them home, so they are somewhere between 4- 5 weeks old now. I'm pretty sure two of them are buff orps, but the third one is driving me bananas. I can't figure out what it is, and if it's a pullet or a roo. Before it started feathering out, it was just all yellow with fuzz on it's legs. Now, it's legs are feathering out, and some of it's tail feathers are coming in black?!? What the heck is this thing?!?
Any help would be greatly appreciated.
Here is Waffles:


Any help would be greatly appreciated.
Here is Waffles: