Red Ranger Chicks - Page 2
I got a straight run of 14 red rangers and had the same question when they were about 2 weeks. Exactly half of them had long wing and tail feathers while the other half were still fluffy butts with short wing feathers. I was just told chickens all grow at their own rates. Well now that they are 6 weeks old (and after losing one that died of fright during a thunderstorm!) we very obviously have 6 boys and 7 girlies, so I think the wing growth was in fact indicative of sex.
UPDATE: I apologize, but I was wrong! At six weeks I thought we had 7 pullets and 6 cockerels but by the time they were all mature, we actually had 9 cockerels and 4 pullets. So though at two weeks half had short feathers and half had long, it didn't turn out to mean anything. :/