Ray,
I love streamers. I find feathers for them in all kinds of stuuf...strung hackles (you usually have to unstring them and sort them, but about half are usually excellent), 'bass necks' or 'streamer necks' (which I used to see all the time, less so now), had usable feathers on them, indian rooster necks for smaller flies (I've even found a couple of genuine CREE in these over the years), and, of course, the older generations of hackle necks, like the Whiting 'American', the older Herbert Minor (sp?), etc..
We cerrtainly have better quality and availability of feathers, but the variety of types seems to have lessened over the years. Most R&D has gone into dry fly hackle I guess.
Buddy
It Just Doesn't Matter....