[VFB] Fox and feathers ?

[Desert Eagle]

Hay folks,
    several months back I sent someone some fox for some flies they were
tying. In return, they sent me some skins, I think they were pheasant, the
sides have some brown with cream colored eye feathers with a black ring on
them. What I am interested in are the feathers that were up on the neck,
they were a deep purple/black, about 1/3" oval and mot a lot of them on the
skin. Can anyone help me with this ?
Jimi