I was fooled by an AustraWhite. It got a bigger and redder comb at about 3 months (I didn't write down exact date I made this realization) than the other AustraWhite. I kept waiting for the crowing. At about 5 months, when the same age pullets started laying, I butchered an older rooster and thought the AW would start now that he was the head honcho. It took another month for me to figure out that he was really a she, because I saw him/her in the nest box. I came to the conclusion that because this breed is a cross between and Australorp and and Leghorn, one pullet got more Leghorn tendencies with the comb and waddles than the other pullet.I am at a loss! I have thought rooster on this 'guy' since about 12 weeks because 'he' started getting red before the other chicks I have. Now they are 20 weeks old, the only surviving 'sibling' to this chick is definitely female but this one I am still confused. Sometimes it looks like a pullet to me and still no crowing at 20 weeks! (no eggs from either chick) I am not sure what breed(s) exactly but 'he' does have a beard so easter egger fits (the 3 I got this spring were all supposed to be easter eggers but this is the only one with a beard).
CG