I'm finding it reassuring to see so many impatient people (like me!!) wanting to find out the sex of their chicks!! Sure I should just 'wait' for a egg or crow, but my kids are really wanting to sort the names out and I want to start rehoming boys ASAP (anti crowing neighbors). They are just under 3 weeks old, all born on 14th September. 2 black Orpington's, 2 buff Orpington's, and 1 mutt aruacana cross a multitude of possibilities. My 'mutt' (last pic close up), has wing, back & tail feathers in, and initiates chest thumps. She's (ha! the presumption!) my only hatched home incubated. The black orps both look like they're wearing 'pants' and one of the buffs (leopard spots head and wings) has a more angular head - beak tip arches down. All but 1 buff orp seems to instigate chest pumps, kicking and downward 'pecks' onto others. So I'm leaning to think 1 pullet only. Anyone want to try & take a guess?