The biologists studied free-flying butterflies, and in their aerodynamic analysis, found the creatures’ wings form a cupped shape during the upstroke and “clap,” thrusting the butterfly forward.

The Mourning Cloak Butterfly (Nymphalis antiopoa ) is one of the earliest (and the latest) flying butterflies in its native range, which spans widely across temperate North America and Eurasia. These ...

Grand Rapids ‘Butterflies Are Blooming’ exhibit bringing thousands of flying insects to Meijer Gardens . Published: ; Feb. 02, 2023, 12:38 p.m.