Hi' Warden. Basically, dry flies are made using either relatively stiff cock hackles which spread out the weight of the fly on the water's surface to increase their floatabilty, or an alternative such as the relatively soft Cul-de-canard feather which aids floating by its structure. The former type of hackle works even better when treated with a water repellant.
Thirdly, dry flies may be made using buoyant materials -- ethafoam, expanded polystyrene, siliconised polypropylene, pneumatic deer hair, cork etc.
Wet flies are designed to sink, so the materials used are usually relatively poor supporters of the fly at the surface. Hen hackles, soft game bird hacles and marabour are popular choices for adorning wet flies. Also, many dressings incorporate lead wire, brass beads, glass beads or tungsten beads etc.
A clue used to be-- up-eyed hooks for dry flies and down-eyed hooks for wet flies, for trout.
If you have a problem, at first, with identifying each type, keep them apart in separate boxes. You will soon learn the differences in make-up. Cheers, TC
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