Insects and other foods the trout may be eating:
1.    Blue-winged Olives
2.    Cinnamon Sedges (Caddisflies) (Abrams Creek)
3.    Green Sedges (Caddisflies)
4.    Little Sister Caddisflies (Abrams Creek)
5.    Eastern Pale Evening Duns
6.    Sulphurs
7.    Little Yellow Stoneflies -Yellow Sallies
8.    Slate Drakes
9.    Light Cahills
10.  Little Green Stoneflies
11.  Golden Stoneflies
12.  Cream Cahills
13.  Ants
14.  Inchworms
15.  Beetles
16.  Grasshoppers
17.  Hellgrammite
18.  Cranefly
19.  Sculpin, baitfish and small crayfish (Imitate with streamers)

Cream Cahills - Duns

I think I mentioned that the duns varied some in appearance but not much. The
main variation is in the markings of the wings which probably makes little difference
to the trout. Unlike what many anglers think, the thorax and abdomen are quite
different from those of the Light Cahills. The color of their abdomen is almost right
opposite of their common names. The Cream Cahill's abdomen is very light
compared to the Light Cahill which doesn't have a light thorax or abdomen at all. In
fact they are almost pure yellow. Some of the Cream Cahill duns have abdomens
that are almost white. Their thorax is brown. I guess it depends on what part of the
mayfly you want to call dark and light. All in all, the Cream Cahills are much lighter in
color than the Light Cahills.

As mentioned before, these mayflies hatch mostly in the very late afternoons or
evenings. The warmer the weather, the later in the day. I would suggest that you
fish the dun imitation starting from about sunset or about an hour before dark. This
time of the year it isn't getting dark until near 9:00 P.M. but you will find that on the
small streams of the Smokies, darkness approaches much earlier than that. You
cannot legally fish past thirty minutes past official sunset in the park. In most areas,
it is usually dark enough that you wouldn't necessarily want to. I certainly don't want
to be wading the streams in the dark.

Like with the emergers, we prefer short up and up and across presentations. You
want to fish the current seams same as you would the emergers but you want the
dun imitations to drift much farther downstream all the way to the end of the current
seams. Watch for the bubbles and let your fly drift through the same area of water.
"Perfect Fly" Cream Cahill Dun