Is comb sexing 7-8 week old Amaricaunas a good way to sex them? I know they only develop Pea combs. Some have no combs at all and no signs of pink at all. I believe those are Pullets. some have a visable but small combs that are pinking up fast. another one has a small but visable comb that is just a little pink. that is the one I am rather unsure of. There is some chest butting going on, is that what Cockerals do or do both sexes do it?