The buff ones (2) but look identical are a little older than the others and yes they are all banty's I was thinking roo for the one as well none of the other have Combes or wattles I don't really know how old they are I know maybe a couple months no more than that we got them all different places lol and I don't know much about banty's its all new to us! But the kids love them!How old are they? The two crested ones look like they maybe cochin and silkie crosses. The first one is probably a roo with the comb and wattle development, depending on age the Buff one is iffy also. You might want to see if you can get a side shot of the little cuckoo guy, is he also a bantam?