I have four ~10-12 week old chicks that are supposed to be pullets (a buff, an australorp, & 2 Easter Eggers). Judging by their combs and tail feathers, I think they are pullets, but the two Eggers act suspiciously like roosters with lots of posturing when they run up to each other, or when somewhat aggressively challenging my dog. I'm still new to the wonderful world of chickens, so maybe that's just normal for them. Also, they both have combs that are developing differently (one seems "ridgy" and the other "wavy"). Is this normal? Lastly, the black australorp has very long & pointy neck feathers and no definitive tail feathers like the others do at this age. So, what's your verdict on my youngsters?