Those are damselflies. They’re smaller and have the eyes on opposite sides of the head, while dragonflies have eyes that either meet or at least come close. They also fold their wings back. I know spreadwing damselflies that keep them at an angle and pond (aka narrow-winged) damselflies that hold them straight back…yours would be the latter unless maybe there are other options where you are.
Nice work saving them and taking some good pictures as a reward.
Oh, they weren’t dragonflies, those are huge and too big to get stuck (didn’t sit still for photos either), but I dunno the diff between darners and damselflies..
Darners are a family of dragonflies, generally bigger ones that hover around while they hunt (they’re also called hawkers). The ones I know are mosaic darners, which are easy to recognize by their size and having mostly bluish spots all along the abdomen. But again, I’m not sure what all the ones in other regions might be like.
Ah, I thought they were smaller! There were some honking big dragonflies, they could have been either I suppose, as there were some very nice colorations.
They’re considered by some as one of the top predators in the world, being able to snatch their prey (such as a maneuvering mosquito) out of the air 90-95% of the time.
They have a reaction time of around 50 milliseconds (described as “only enough time for information to cross about three neurons”), during which they calculate distance, speed, and heading, and plot an intercept course.
They use ‘motion camouflage’ to angle their intercept course just right such that from the point of view of their prey, they’re always at the same angle, appearing motionless until they strike.
They’ve been studied to see if we can artificially replicate those skills for missile-defense systems, because it’s possibly better than what our best and brightest could do otherwise.
Agreed! I really like both damselflies and dragonflies. One byproduct of spending so many hours floating in lakes is that I often have damselfly nymphs climb up onto my inflatable and hatch into adults. It’s a nifty process to witness!
Are those the ones with the patterned black-and-white wings? I see red darners pretty frequently in my backyard due to proximity to a small lake.
I don’t think there are any red darners in North America. There are lots of red skimmers or meadowhawks though. Unlike darners they usually perch horizontally so they can quickly take off to grab food, and when they’re flying around it’s because they’re looking for mates instead. The ones with the black and white wings would be other types of skimmers too – eight-spotted, whitetails, or so on.
I’m just going by the common name I’ve heard for them. Looking into it a bit, I might be more accurately seeing either crimson meadowhawks or flame skimmers. Thanks for that info. Definitely horizontal perchers, not overly large for dragonflies but with robust abdomens relative to most.