what do you get from birchen/dark cuckoo cross?
if the cockerel is dark cuckoo and the hen is Birchen you will get 50% each ,work like Blue over a Black 50/50
if the cockerel is a Birchen and the hens are cuckoos than all the cockerels will be dark cuckoos and all the pullets will be Birchen
Birchen and cuckoos work very well in breeding pen ,
Birchen will add the hackle to a cuckoos .
chooks man