Love the pics!
But, the pic of your buff O brings up a question I've been wanting to ask. I have a little buff O that is two weeks old. She's feathering out but still has more flufff left than yours do. However, her comb is quite a bit bigger than that of yours pictured here. Bigger than the other 4 chicks I have too. I wasn't sure if comparing her to them was fair because she's the only single-combed chick out of a group of pea and rose combs, but now looking at yours I'm wondering if she isn't a he? She also has been my sweetest natured little chick, to the point of being bullied, but has recently gotten aggressive toward the other chicks - jumping on them and running them off.
I know any guesses at this point are just that - guesses. But does anyone suspect I've got a roo on my hands?