Or triggered by weather or courtship? In some species, males wait and pounce on females as they fly by, and there is little color difference between males and females. They have very large eyes and hold their wings out straight when resting. They are beneficial in many ways, and some gardeners strive to attract the insects into their yard. April 1, 2008 . It was our first morning at our first Burning Man and we took the sighting as a good omen. Ask the Naturalist: Why Do Dragonflies Swarm? Swarming dragonflies could be responding to a high mosquito population, but they also eat several fly species. She studies massive swarms of dragonflies that form when large groups of the colorful, aerial insects pause their migration to feed.“Dragonfly swarms are big groups of dragonflies that are typically feeding on little prey insects,” says Goforth, head of citizen science at the North Carolina Museum of Natural Sciences. “So you can get anywhere from a dozen to millions or even billions of dragonflies flying together in these big groups.”She’s searching for the root of this behavior through a study called These swarms are so large they’re showing up on weather radars, which Goforth says isn’t unusual for these clusters of creatures.“The data that I've collected through my Dragonfly Swarm Project suggests that disturbances play a really important role in this behavior so that anytime you get fires or floods or big storms or even people mowing their lawns is enough to kind of kick up a bunch of little insects that the dragonflies will take advantage of.” There are over 60 kinds of dragonflies in California and more than 28 in the Bay Area, so mating strategies vary quite a bit among species. If you've arrived here, you have likely seen something magical, amazing, terrifying, or utterly awe-inspiring.

But, you saw it: tens to thousands to millions of dragonflies…

This widespread dragonfly, which grows to about two inches long and varies in color from pink to tan to dull gray, can be active year-round in the Bay Area, even in winter.The swarming you saw probably had nothing to do with mating. Maybe it was in your backyard.
I suspect the latter may be what you saw. by Michael Ellis. Then there was the huge dust storm that I foolishly thought I could outbike to 8:15 and Guess, hehe. Most need an air temperature of at least 63 degrees to get moving.Dragonflies and damselflies belong to an ancient insect group called the Odonata, some of the earliest flying creatures on our planet. You might have even been zipping along the interstate in your car at the time. Could you tell me more about this phenomenon? ya, I saw the dragonflies whirling about while at a friend's camp on Last Chance and 6:35.

It could mean that rain is headed your way! (Repeats story to more subscribers with no changes) HANOI, July 16 (Reuters Life!)
Share This: Last October, while hiking on Mount Tamalpais, near Laurel Dell, I saw numerous swarms of dragonflies. On Mount Tamalpais I have seen swarms of common greens but also of the variegated meadowhawk. Like the little study I did that focused on damselflies and weather in my … Dragonflies are big, strong fliers. Why Do Dragonflies Swarm? Dragonflies are not a bad species of insect to have in a yard -- they do no harm to humans, and their presence is a sign of a healthy ecosystem. Is it seasonal? Perhaps you were walking down the beach. The aquatic insect expert doesn’t just study solo dragonflies. Last week I talked a bit about how weather affects odonate behavior, my favorite topic in biology.

This is indirectly weather-related, because dragonflies are active only on warm days. 04:20 ... On why she loves dragonflies “For me, it's that they look so beautiful and delicate but they're so impressive. Your swarm sounds like a feeding swarm, and it’s not uncommon for them to form in areas even without rain, especially if you’ve been seeing them in your yard for a few weeks.

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