Here is a pic of two RIR chics 9 weeks old, same hatch, is the front one a roo, or just developing faster than second one?
I vote hen because I have an 11 week old RIR who looks exactly like this.... and a Black Sex Link too..... around the comb and waddles, but definitely has hen feathering. The one roo I've had it was just so obvious it was a roo from the time it was 3 weeks old. I'm not convinced yet that combs and waddles are the tell tale sign in some chickens. I'm new to this but all my chickens are different, same breed ones too, even though they are the same age. Just my observation from the many hours I've been spending in the coop
Roo. Compare the legs. I bet his are fatter. If they weren't from the same hatch I'd say you had a 20% chance of it being a hen. My 10 week old RIR crosse roos have much bigger combs than that.
My RIR roo at 9 weeks had a very pronounced comb and waddles. I say both are hens. Should also have a more pronounced tail starting.
No, that's a hen. The roos have bigger combs by that age. That is a very small comb. Some hens develop larger waddles than other hens. Some have combs that are a little larger, too, but that one is small. That's definitely a hen.
My chicks are 9 and a half weeks old. By 6 weeks all the boys had much bigger (and redder) combs than that. I would hold out for a hen, but treat her with suspicion...