I have found some interesting info on the Purple barring and the green feathers. If anyone has the Principles and practice of Poultry Culture by JOHN H. ROBINSON look on page #529 It also talks about the White Tail Coverts and the white in Hackle undercolor. It is not breed specific, and is a very old book. If anyone is interested I can write out what it says for all.The pics turned out ok in the dark, the green and purple sheen are brilliant in the sunshine but I think the pics show it well enough. These are both young pullets, first pic. pullet one has no green sheen, only the purple (compare to the green sheen on the cockeral next to her), second and third pic are of the same pullet, she has purple and green.
Quoted from the SOP: "Black Birds, Plumage: Surface -- lustrous greenish black. Undercolour--(except where otherwise specified) dull black in dark-legged varieties, slate in yellow legged varieties." BCM's are not in the current SOP and I do not know whether they are listed under the Black Varieties or not but I would guess so, anyone???
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