Stacking is a method of aligning at one end various hair types, feather parts, or other linear fly-tying materials. This can be done with like or unlike materials. Most animal hairs that are stacked come from ruminant mammals. These include the Cervidae family (i.e. deer, elk, and moose) and the Bovidae family (i.e., the cow, ox, sheep, goat, and antelope.) Though other materials are frequently stacked (feather barbs, rodent guard hairs etc.) this article will address preparation as well as the process of stacking hair from ruminant animals.
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