Scottish Feathers

The weather has been horrible again today. Sorted a couple of drawers in one of the spare bedrooms, came across this "spray" of feathers.
Not sure which side of the family it came from, but I can't imagine who would buy a little tartan box with feathers, it is not even attached to a brooch fastening.
My next thing to decide, what should I do with it? or what sort of feathers are they?
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