The clipped deer hair head makes this fly land softly and sink slowly.
This fly cannot be shipped outside the US.
U.S. law prohibits the export of certain wildlife products, including any deer or squirrel, without the purchase of a very expensive export permit. In many cases synthetic materials can be substituted for prohibited products. Please feel free to explore the possibilities with Dan.
I have had great luck on this fly when bones are mudding. I don't know...