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They say the migrate:
"Some dragonfly species migrate long distances each year, a still-mysterious phenomenon not unlike the celebrated flight of the monarch butterfly. Recent studies have shown that green darner dragonflies migrate in sizable swarms each fall and spring between the northern United States and southern Mexico, while the globe skimmer dragonfly lives up to its name: It has been tracked crossing between India and Africa, a round-trip, multigenerational pilgrimage of some 10,000 miles.
Dragonflies migrate to maximize breeding opportunities, seeking warm freshwater ponds in which they can safely lay their eggs. From those eggs hatch dragonfly larvae: astonishing gilled predators that will spend from weeks to years hydrojetting through water and shooting their mouthparts after aquatic prey, until they’re ready to spread their wings and take the hunt to the sky."
I quit feeding the hummers towards the end of September, they recommend you do so they will migrate.
"Some dragonfly species migrate long distances each year, a still-mysterious phenomenon not unlike the celebrated flight of the monarch butterfly. Recent studies have shown that green darner dragonflies migrate in sizable swarms each fall and spring between the northern United States and southern Mexico, while the globe skimmer dragonfly lives up to its name: It has been tracked crossing between India and Africa, a round-trip, multigenerational pilgrimage of some 10,000 miles.
Dragonflies migrate to maximize breeding opportunities, seeking warm freshwater ponds in which they can safely lay their eggs. From those eggs hatch dragonfly larvae: astonishing gilled predators that will spend from weeks to years hydrojetting through water and shooting their mouthparts after aquatic prey, until they’re ready to spread their wings and take the hunt to the sky."
I quit feeding the hummers towards the end of September, they recommend you do so they will migrate.