Standards can be rather disapointing I think. Really, who cares what the "original" body material was because you know what, it could've so easily been something else. Don't get me wrong, I'm all for learning the traditional patterns and I've done my fair share of research and tying different styles of flies but I really hate when people post stuff like I don't have "x" material to tie this fly what do I do??? The answer is so obvious...use something else... be creative.. don't limit urself to following recipes word for word, material for material, or otherwise you'll find it's not so exciting.