Originally Posted by morbius18
The blue coppers are E^R Birchen based. The golden cuckoos I'm working on are birchen based, is that what you were referring to?
Yeah sort of, when you said "blue marans"- it meant solid blue birds to me, no 'copper' color. I didn;t know if they were E, ER or even mix of E/ER- happens far more often than you think.
Also honestly a lot of "coppers" could pass for E if melanizers aren't present in the stock. A lot have minimal coloring which is generally considered more typical for E, with ER having more color in comparsion- particularly lacing on hen's breasts. None of this excludes the possibility of ER with some melanizers being present.....
The blue and red coppers I had frequently threw hens with no color on necks(solid black or blue) however roosters always had some color... is this E or ER with melanizers? Or random combinations of E/ER with melanizers being very mixed also...
Basically, the safe guess is to expect roosters with some color, with hens also having some color 'but do not be surprised if some turn out solid colored(non leaky)'.
However if you're working with blue coppers rather than solid blues, you're pretty safe in expecting all hens to have color on necks, and roosters with color on necks and backs at least.. in this case, you'd be pretty safe in expecting golden cuckoo, blue golden cuckoo and splash golden cuckoo. This is because birds in this probably are lacking the melanizers necessary to turn them solid colored.. even E needs melanizers to turn E roosters solid black.
Edited by Kev - 12/21/15 at 1:42pm