Insects and other foods the trout may be eating:
1.   Blue-winged Olives
2.   Little Black Winter Stoneflies
3.   Quill Gordon Mayflies
4.   Blue Quill Mayflies
5.   Little Brown Stoneflies
6.   Little Black Caddis (American Grannoms)
7.   Hendricksons and Red Quills
8.   Litte Short Horned Sedges
9.   Sculpin, baitfish and small crayfish (Imitate with streamers)
10  Midges

The Hendricksons and Red Quills - Part 3
The Hendricksons and Red Quills usually hatch when the water is between 50 and
55 degrees. The nymphs swim to the surface to hatch using a wiggle motion of their
bodies. They may repeat this process several times. At least that is how they acted
when the nymphs emerged in my aquarium. I have raised them two different
seasons for my
Mayfly DVD.

I suppose much of it depends on the weather and water conditions. It is logical to
assume that it is during this time that they are most subject to being eaten by the
trout. It is also quite obvious because you can usually see the trout swirling and
flashing when they are eating the emergers in the slow end of a pool.

Where there are good concentrations of these mayflies, the spinner fall is usually
very heavy. The males fall to the water or bank as soon as they mate. The females,
full of eggs, follow shortly afterwards. They appear from the sky it seems (very high
in the air) and descend to the surface of the water to deposit their eggs. They then
fall spent and die. There can be a lot of spent flies on the water in a relatively small
area. I have seen it start before the duns stopped hatching. When the happens,
there will be duns and spinners on the water at the same time. It usually doesn't
overlap though.

The females deposit their eggs in the same water that they hatch from. The spinner
fall usually starts very late in the afternoon just before dark. It is possible the best of
it will occur after the time the park permits you to fish. On cloudy, overcast days it
may start earlier. Most of the time you will need to fish as late as the rule permits.

If the hatch is heavy, the fish will usually get into feeding lanes and develop a
steady feeding rhythm eating them. Start out using a male spinner imitation. When
the action slows, if the females have arrived, change flies to imitate the eggs layers.
This may sound a little complicated and confusing but just remember that the males
fall first and you would want to start with a spent imitation of the male. They have a
dark rusty brown body with clear wings. When the females start to deposit their eggs
and you see them dipping to the water in the low light, change to the female spinner.

Here is our
"Perfect Fly" section on the Hendricksons and Red Quills.