These guys/girls were hatched on 4-1 and 4-2 so just over 6 wks. Any guesses on gender? How can you tell w/ the rose combs? And then w/ the others, is it the hens stay pink while the roos turn red? Also, why dont the black one have any tail feathers. She also has spots under her wings and on her back. Mom is a black Orp and dad is a mix of who know's what.