Cocoa could also be a brown Leghorn, that would account for her smaller size. They're lighter bodied birds, Wellies are larger. They're identical in color, both have straight combs and yellow legs. You have to go by body shape, and as they grow the Leghorns will get white earlobes while the Welsummers are red. And then when they lay, the Leghorn would give you white eggs while the Wellie would contribute terra cotta or speckled eggs.
Stem cell transplant from unrelated donor in Feb 2015. Thank you to all my friends here on BYC for all your support during my treatment and ongoing recovery!