Aw, thank you! I got them from a lady who has a breeding flock locally. I think I remember you mentioning yours in another thread. Do you have pictures posted? I love them too!
Here's an updated pic of 1, 2 and 3. I didn't get a good photo of the 4th. I'm pretty sure I have 3 pullets and 1 cockerel, unless any are going to be late bloomers. The darkest chick has a badly sprigged comb I would love to eventually have a trio or quad that was breeding quality, but those individual birds seem like needles in the haystack.
Your babies are beautiful! Please post more recent photos. I got Ayam Cemani chicks for Christmas and am also wondering about their sex. 4 weeks old now.
Yes, I'm mostly going on comb size at this point. With more time, feather features should add more clues. I want more of these guys but I've already brooded 2 batches of winter chicks and a 3rd batch won't fly. Maybe in spring!