Oh, this calculator isn't the best user interface, but it's addictive for us chicken lovers!! This spring I'm loading some of my favorite purebred eggs into the incubator- wheaten marans and welsummers. But also some crosses- olive eggers black copper marans and welsummers, and BCMs or Ayam Cemani on 'purebred' hens (Isbar, EEs, RIRs, etc). With all the combs, leg colors, and color combos, I'm hoping this calculator helps me determine heritage!that’s a fancy bit of software! Looks like I may have all cockerels then - not a great start to getting a rainbow of eggs in my basket![]()