Buzzers, from early season to late they are fantastic. They are designed to imitate the emerging form of a midge fly, which happens to be a staple part of a Trout's diet! Buzzer Trout Flies start in life as a bloodworm and live in the mud usually in still waters. As they grow, the red colour fades and they swim from the mud to the surface in a wriggling action. Once they reach the surface, they wait, until ready to hatch. It's during this period, Trout will swoop in and start feeding.