Eastern Amberwings (Perithemis tenera) in the reproductive wheel: the male holds the female by the back of the head; the female curves her abdomen up and forwards his genitalia, located (counterintuitively?) at the base of his abdomen. A female Blue Dasher (Pachydiplax longipennis) dipping her abdomen down to lay fertilized eggs in a bit of water floating on a lily. In some species of Odonates, the male will continue to hold the female after mating and through the egg-laying process, precluding another male from mating with her, as with these Familiar Bluets (Enallagma civile). They can fly in tandem like this. Some species’ males will scoop out a previous male’s sperm from the female before adding his own with his specially equipped penis.Blue Dasher females don’t seem to need chaperones. And look at all the eggs! Like pieces of short-grain rice, but much smaller. Of course, you know many will not make it to adulthood. These eggs were another post-photo discovery.
Posts Tagged 'Green-Wood'
Tags: Brooklyn, dragonflies, Green-Wood, insects
Tags: birding, birds, Brooklyn, Green-Wood, Prospect Park
Tags: birding, birds, Brooklyn, Green-Wood
Tags: amphibians, Brooklyn, frogs, Green-Wood
Green-Wood’s Valley Water, filled with tadpoles earlier in the spring, is now full of young Bull Frogs (Rana catesbeiana). At least, that’s what I think they are. The crowd including this frogpole, not yet completely transformed into an adult.The lily pads spluttered as these little ones hopped, skipped, and splashed away, sometimes hitting several pads before find the shelter of the water. Most skedaddled well in advance of the camera.But I managed to digitize a few of the dozens upon dozens of them.The telephoto compresses space, so I’m not sure how close these two were. The mature frog would be a mouthful.
My eyes were intent on the edges of the pond, alive with damsel- and dragonflies, so I didn’t see this young Green Heron (Butorides virescens) until it darted away on foot. It didn’t go very far, though. I watched it for a long time as it stalked back and forth along the pond. The heavy streaking on the white breast is characteristic of a young bird’s plumage, but the real giveaway here is all the downy fluff still blowing about on the head. Where was the nest? The parents? Was it already on its own? It hadn’t developed much fear of humans yet; I was about fifteen feet from it, another civilian walked by as I stood there. It was working on its hunting skills:Grabbing an Eastern Amberwing (Perithemis tenera) from the air.
The Prospect heron nest we were watching last month failed. I heard there were several young one day and the next nothing. Raccoons or rats may have gotten to them. It was a very low nest, not as high as they usually build them. As always, the city is a tough neighborhood to raise your young.