Love the pictures! I see a couple of those chicks that I have a hunch on so far as gender - watch my guesses be the total opposite of the truth
mbmess, three of my five Icees are crested. None of them are huge crests, like Mahonri's Phyllis. The two girls have little ladies' hats on the top-frontish part of their head, and the boy that's crested has a much more subtle topknot. When they were little, there was kind of an extra "bump" of fuzz on their head. I didn't realized my cockerel had a crest until he started getting pinfeathers on his head - the crest came in first.

mbmess, three of my five Icees are crested. None of them are huge crests, like Mahonri's Phyllis. The two girls have little ladies' hats on the top-frontish part of their head, and the boy that's crested has a much more subtle topknot. When they were little, there was kind of an extra "bump" of fuzz on their head. I didn't realized my cockerel had a crest until he started getting pinfeathers on his head - the crest came in first.