I heard if the have a V shape on their heads it's a female. if the V is not so clear cut, it's a male. it's very difficult to see in the pictures for me, but based solely on that "V" pattern my GUESS because one V is more definite on one, I'd say you have a Female and a male. I've never raised that breed myself but I do a LOT of reading about different breeds and such and this is what I had read. I hope this helps. I'm not 100% sure how accurate this method is but you look it up online and read about the "V" pattern sexing of a Welsummer chick if you like and read about it. Then make your determination from there. I do hope this helps a bit. They sure are precious!!