OK, so I have 8 chicks downstairs...2 of each type. 2 Welsummers, 2 black sex links, 2 dominiques, and 2 EE's. The welsummers are 5 1/2 weeks old, doms and links are 4 weeks old, and the EE's are 2 1/2 weeks old. The wellies, 1 is twice the size of the other. Same with the EE's and same with the dominiques. The black sex links are the same size however. I mean, especially the welsummers, the size difference is remarkable. but really you can tell huge differences in sizes with all types except for the links. what on earth causes this? is it a dominance thing within the breed? like who dominates who for food?