The wing bones, so very birdlike, until you realize that the bat's fingers extend into and are connected by the wing membrane. In birds, the fingers are all fused into one sort of paddle, including the stubby bony alula (that little thumby thing that sticks up on a chicken wing) and feathers grow out of that bone, and take the place of membrane. With bats, the hand bones extend out to the perimeter of the wing.
Showing posts with label bat wing structure. Show all posts
Showing posts with label bat wing structure. Show all posts
Looking at a Red Bat
I opened Blogger to make a new post tonight. It said that I've written 1,700 posts since December 2005. I'm trying to get my head around it, that I've sat down 1,700 times to do this, that I've had that many things to share. And yet...
My mild frustration these days is that I can't get to it all. Every single day I see or do or experience something I long to share. I often take several hundred photos in a single day. Videos, too. I squirrel them all away, wishing I could show them all to you. I'm keenly aware that the kinds of things I find where I live simply aren't available to everyone who enjoys this blog, and that's part of its appeal.
Or maybe they are, but you wouldn't pick them up with your bare hands. That's OK. I ain't skeert. Had my shots.
Serendipity: Unless I'd been jogging early in the morning along my county road, I likely never would have recognized the tiny bundle of russet fur on the asphalt as a red bat, freshly killed by a car. And because I am the Science Chimp, and to me certain roadkills represent a pearl beyond price, I picked it up and folded it gently into the cargo pocket of my shorts, saying a fervent prayer that I would remember there was a dead bat in my shorts before oh, I don't know, rolling down a hill or cooking dinner or putting the shorts in a drawer or sending them through the wash.
I was so very sad to find it a past bat. The red bat is perhaps my favorite (although any bat I get to see is my bat du jour and de facto favorite ever). It's one of eastern North America's largest bats, but even so it's absolutely tiny by mammal standards.
That's an average size facial tissue, and the wingspan is maybe 9" fully extended. The literature says it goes up to 13". Hmm. Maybe this is a pup? It seemed teeny to me, the body not even two inches with the tail folded under.
and the two little headlights of white fur on the thumb joints, as well as the subtle necklace of white around the neck. He looked as if he were wearing a costume head.
Note the rounded ears, set well into the fur. This, like many other of the features we'll see, is an adaptation to cold temperatures. You wouldn't want long delicate ears sticking up out of your fur if you're a northern animal, and you're active in cold winter temperatures, as is the red bat. Here, too, you can see the tragus, a process in the ear opening. It was so diaphanous as to be translucent. This bat's eyes were tiny, smaller than those of a big brown or little brown bat. But that's mostly because it was dead. As you'll see in Part II, a live red bat has very bright eyes indeed.
One of the things which impressed me most, and which I wasn't expecting, was the thickly furred wing membrane. All along the wing bones is soft silver-buff fur, another cold adaptation.
The wing bones, so very birdlike, until you realize that the bat's fingers extend into and are connected by the wing membrane. In birds, the fingers are all fused into one sort of paddle, including the stubby bony alula (that little thumby thing that sticks up on a chicken wing) and feathers grow out of that bone, and take the place of membrane. With bats, the hand bones extend out to the perimeter of the wing.
This post has proven to be a hogchoker, with more than 20 photos, so I'm going to give you more bat bits on Thursday.
Which will be
Post #1,702. Gack! I could do this full-time, you know, and never run out of inspirato. The problem is I have other stuff I have to do. Don't we all.
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Thursday, August 22, 2013
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