Fishing is tough at best. Use Caddis and Blue Wing Olives for dries ... are scoring with water dogs and large streamer flies such as Black Bunnies and Bunny Leeches. South Platte River (btwn ...

And they've discovered that the flies' Achilles heel is the color blue. "When the tsetse flies are looking for targets to bite, they're generally looking for something that contrasts with the ...

with the very specific phthalogen blue leading the pack, followed by black and reds and green-yellow coming in as least attractive. But, why are tsetse flies attracted to blue and black colors? What ...