Tying for umbrella flies

This site instructs a fly tying in step by step for 2 Umbrella patterns which uses extended feather body where does the origin of Umbrella dun. It is not necessary to use the special tools, tying techniques and many kind of materials. Followings are the tools and materials for tying Umbrella flies.
For tying of the tube bodiz, review the site "Tube bodiz".