Buzzers are a staple part of a trouts diet, whether you're fishing for wild brown trout or rainbows on a large reservoir, buzzer will be present. The Olive McPhail Buzzer can be fished as a single fly or as part of a team of buzzers. A two or three fly cast is usually best when targeting buzzer feeders with this Olive buzzer fished on the top dropper to catch the light. Designed by Fulling Mill fly designer, Davie McPhail.