At some point in my fly tying career, I decided I was going to use natural materials in my flies to the greatest extent practical. In the last few years I've been finding fewer natural materials than I've been accustomed to in most fly shops. Try finding some wool yarn in a fly shop for example. Most shops I've visited don't carry it. Recently I was looking for some duck wing quills. At most I'd find one or two colors in each shop, or none at all. It seems that people are progressing away from the origins of the sport, wherein fishermen made fish attractors out of fur and feathers. I haven't figured out if it's the fishermen or the materials suppliers that are most responsible for this trend. I don't know, I just felt like throwing this out. Don't mind me.