Yes, the chicks are getting bigger - the fluff they were born with is working its way out while new feathers (the first set of two) are coming in...
These two are a week old and hatched out of the blue Ameraucana eggs. They are now oficially EE's (Easter-Eggers) and will most likely lay green eggs (I've read that a cross between a brown layer and a blue will end up with green eggs). They are still unnamed, as all the chicks are. Since we had a roo named Dottie we don't want to make the same mistake again!
This photo shows almost two week old chicks - the brown sitting one is an EE and the black one is either an Australorp cross or a Black Star (both brown egg layers).
Still no clue for certain about pullets (female) to cockerels (male), but we've guessed at least 4 potential future crowers based on behavior!