Sexing 3 week old Welsummers and Leghorns

Hi

We currently have a hatch of 10 chicks and Im pretty sure I can already identify 3 boys, I wonder if some of you couldconfirm my suspicions?



In this first photo I think theres one boy and ine girl exchequer leghorn?



Surley its bad news if youve got a comb like this after just three weeks!





Finally I think this is a boy at the front and a girl at the back

Thanks in advance
Michael

Thanks mate. Looking at whats left I fear theres 3 more boys yet, but ill give them another week as its not so obvious!