I see a lot of people trying to sex non-sexlink birds at this age around here, and was wondering what the success rate is on guessing/sexing the birds at this age? Last year I had 4 chicks and guessed that 2 were definitely pullets , 1 was probably a pullet and 1 was a cockerel at about 4 weeks, but it turns out i had a really butch pullet and sort of a girly cockerel as at 9 weeks I had to reverse my cockerel/probably pullet guess. But my definitely guesses were solid. This year I've got 4 chicks again, and only 1 in the definitely pullet category. They are only 3 weeks though. I am going to try to refrain from posting pics until next week or the week after, since it seems that guessing accuracy is directly related to how old the bird is.