so here they all are now....i have a feeling 3 are boys!
I think they are all mixed-breed chickens, because they do not look like any pure breed I can think of. There aren't many breeds with crests on their heads, and even less where the crest lays backward like I'm seeing on some of those, and then the color isn't right either.
What country do you live in? I'm in the USA, so I'm mostly thinking of breeds that exist in this country. I do know that some other countries have other breeds.