Photo 1 is chick number 2 and number 3 photo 2 is all 4 chicks - notice the difference in colour of the chick at the back (what does that indicate?) the tail on that chick is also twice as long PHoto 3 is chick number 4 (this one is the smallest, also more quiet) Photo 4 is chick number 1 (pretty sure that's a rooster?) he is also the one with the darker colour and longer tail. Photo 5 is chick 2. This one is confusing me because of the head markings which indicate a hen but it's the biggest chick and very much 'out there' also has a fairly long comb already I would love the opinion of people who know the Welsummer Breed as to what sex you think they are. I have 4 chicks, photos are taken today at 4.5 weeks of age. I'll appreciate your comments.