I have 2 black australorps about 19 weeks old. One has a comb and waddle that is now starting to look like it it getting red for egg laying. The other has a small pale colored comb and just starting to develop the wattle. They are both the same height and tale and neck feathers look the same. The one with the red comb and wattle is a little wider. They are suppose to be the same age. I have 2 buff orpingtons about 3 weeks old. One has a comb sticking up. The other has just the line where the comb will grow. The one with the comb line has its tale feathers sticking out and alot fluffier that the one with the comb. Do chicks just develop at different rates? I am getting a little worried about the store I bought these from. They are supposed to be sexed for hens. I think it would be a ripp off if I end up with 2 roosters out of 4 that are all supposed to be females. Has anyone else seen this happen and end up with all hens ?