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Posts Tagged ‘predator’

Sometimes the dragonfly is the predator and sometimes it is the prey—it appears to be primarily a matter of circumstances and timing. This male Common Whitetail dragonfly (Plathemis lydia) met his demise this past Friday at Occoquan Bay National Wildlife Refuge.

I am not sure how exactly the spider managed to snag the dragonfly, but I assume the dragonfly flew into the spider’s web, which was high in the air, spanning a gap between some tall trees. Interesting enough, I was only able to see a few strands of the web, so I wonder if this action took place at the extreme edge of the web.

common whitetail dragonfly

© Michael Q. Powell. All rights reserved.

 

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Dragonflies are so beautiful that I sometimes forget that they are also fierce predators. Last weekend at my local marsh, I captured this image of a female Eastern Pondhawk dragonfly (Erythemis simplicicollis) feeding on another dragonfly, which looks like it might be a female Blue Dasher (Pachydiplax longipennis).

The dragonfly is perched on the end of one of the slats of a railing that along the edge of an inclined section of the boardwalk. I cropped the image to focus viewers’ attention on the dragonfly, but I also like the second version of the same photo, which is close to the original view when I took the shot. Somehow those three slats remind me of a row of tombstones, a memorial to the predator’s prey.

Eastern Pondhawk

Eastern Pondhawk

© Michael Q. Powell. All rights reserved.

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Dragonflies are super-predators, according to a posting today by one of my favorite bloggers, Sue of Back Yard Biology, thanks to their agile flying ability and incredible eyesight, but predators can also become prey. You should check out that posting for a wonderful explanation of dragonflies’ visual acuity and some beautiful dragonfly images.

The Tree Swallow (Tachycineta bicolor) in this photo has captured a male Blue Dasher dragonfly (Pachydiplax longipennis) that appears to be struggling to extricate itself from the grip of the bird. In the second shot, the swallow is offering its prize to its mate, which pokes its head of the nesting box and takes a bite of one of the wings. (If you look carefully at the first shot, you’ll see that it was taken after the second shot and part of one of the dragonfly’s wing seems to have been bitten off.)

Predator or prey? There always seem to be some creature above you on the food chain. It’s no wonder that so many of the birds, animals, and insects are so hyper-vigilant and skittish when we try to take photographs of them—their survival may depend on it.

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Michael Q. Powell. All rights reserved

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