My chicks are only 3 weeks old, but I am seeing some very noticable differences in some of them. This one especially! I am thinking he's a HE? His comb is a lot brighter than all the rest...his feathers are coming in slower and he has like no tail feathers (which I ready on the Wyandotte sexing thread can be a sign of a rooster too?). This one's a SLW. As compared to this one...who is a GLW and I'm hoping is a pullet because s/he is soooo sweet! Looking at the comb on the one behind has me wondering if it's a roo too! LOL!