Have you found that fishing for trout in the morning or the evening gives you better action than fishing in the middle of the day. I have. I’ve always attributed it to water temp or trout hiding from the bright sunlight. These may be factors, but there’s another element that I just recently became aware of. Smart guys call it the Diurnaly Periodic Behavioral Drift of aquatic insects.I call it bugs that let go and float downstream at around the same time every day.
Behavioral drift: The nymphs and larvae of many aquatic insects sometimes release their grip on the bottom and drift downstream for a while with synchronized timing. This phenomenon increases their vulnerability to trout just like emergence, but it is invisible to the angler above the surface. In many species it occurs daily, most often just after dusk or just before dawn.
Behavioral Drift of Aquatic Insects 3 comments
According to Todd Opsal at On the Creek Fly Shop in Cross Plains (and, as it turns out, lots of other online resources), Behavioral Drift may play into the general increased success trout fishermen find when fishing before, during, and after the sunrise and sunset.
I’m really looking forward to warmer days ahead. Last year I enjoyed fishing the cool mornings in July when the sun comes up at 5am and the fish are slammin’ bugs. Makes you want to set your alarm early, don’t it?