Hi, HM
I did - at least I looked at some photos of adult birds and the females are black and the males are brown with copper heads. I have therefore deduced that I have four females and two males. They're lovely - the girls are black and cream and the two boys have very distinctive copper heads. Today's plan is to keep a breeding trio and sell one.
Tomorrow, they go from our spare room to the garage, thence to the garden once they are fully feathered.