Fortunately for humans weathering the swarm, mayflies are not harmful and cannot bite or sting. Mayfly swarms are a gift for many insect-eating birds, including eastern kingbirds and tree swallows.

The mayflies were concentrated near La Crosse, Wisconsin, often a focal point for annual swarms Their crushed bodies make roadways greasy - this year's Mississippi caused at least one car accident ...

By 1910 the first version of her plane the Mayfly was ready for its test flight. It was built mainly of wood and the steering was controlled by a set of bicycle handles. At first it was tested as ...