As it applies to fishing, this is the best page I've found on this subject. http://steelheadeggs.com/index.php?o...d=51&Itemid=57
I have seen people look down on egg patterns, but really they are a very legit food source. If a stream has fish, those fish lay eggs whether the eggs produce or not. Fish eat them like crazy too. When fish are spawning I always tie on and egg pattern at some point, and always catch fish on it.