The glasswing butterfly can travel up to 12 miles a day and at a speed of 8 miles per hour. The key reason behind its migration is the idea of changing elevations and population density.

To attract females, male glasswinged butterflies will form large gatherings where they compete for available mates. They display themselves in large groups to attract females. They also release pheromones during these gatherings or lekking to attract mates.

Before the males’ butterflies can convert alkaloid compounds to pheromones they use during mating, these compounds are also nauseating to predators. Hence, they can lek without any worries of being prey.