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Thursday, September 30, 2010
little beggars
Wednesday, September 29, 2010
sunflowers!!!!
I heard once again from Wayne Mallinger:
"I found this farm on Hwy 321 and Friendsville Rd. in Loudon. Photo was taken on September 8. Sunflowers as far as the eye can see."
Thanks, Wayne.
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Tuesday, September 28, 2010
these waters, rolling
Thanks, Karen Sue
Monday, September 27, 2010
ghost birds: woodpeckerness
"Tanner immediately began a palmetto blind near the tree and settled in to watch the activity, making careful notes of all he saw. Throughout the day, the male and female returned to the tree with food for the young bird. From time to time Jim noted seeing the nestling stick its head out to look around; at times
it would exercise its “woodpeckerness,” using its bill to chip away at the lower edge of the hole, creating a noticeable notch."
Excerpt from Ghost Birds published by UT Press. For more information go to:
Ghost Birds: Jim Tanner and the Quest for the Ivory-billed Woodpecker, 1935-1941
Cover illustration by the author. Book available in the gift shop at Ijams Nature Center.
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Sunday, September 26, 2010
polyphemus lives on
Recently I received this story from friend and co-staff member Mary Thom Adams.
Thursday, September 23, 2010
natural histories: snail darter
"On the surface of it, Sunday, August 12, 1973, was a day like any other dogday summer variety--hot, humid, hazy. It was a lazy, gone fishin’ kind of day. The forecast for the Tennessee Valley called for temperatures in the mid-80s with a slight chance of an afternoon thunderstorm; some locations would see a bit of rain but most would not. That, at least, was the surface of it; but that was just the thing; Dr. David Etnier wasn’t on the surface; he was below it, snorkeling in the cooling depths of the Little Tennessee River at Coytee Springs. It was one of those mornings that was destined to change a person’s life. Dr. Etnier happened upon a small two-inch fish that he was able to cup in his hand, and since he was an aquatic biologist and a professor of zoology at the University of Tennessee, he knew he had found something special; something he had never seen before. Dr. Bob Stiles from Samford University, who was with him that day, had not ever seen anything quite like it either. That is what separated their morning from the rest of the mornings being enjoyed up and down the river. "
Snail darter discoverd excerpt from Natural Histories published by the University of Tennessee Press
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Wednesday, September 22, 2010
gigantious
Just when I thought sunflower season was over, I found the mother-of-all-sunflowers growing in a neighbors yard near my home. Wow!
Sunflowers are native to North America but there are at least 67 species and several subspecies, all in the genus Helianthus. This one I'll simply call Helianthus gigantious—my own name for it, not a real one—it dwarfed the smaller variety growing nearby.
Vincent van Gogh would have loved to paint this one, but he would have needed a big canvas.
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Tuesday, September 21, 2010
horned devil adieu
Sunday, September 19, 2010
ghost birds: four dollar boat
In Georgia on the Altamaha River:
"After buying a boat from another local woodsman, Jim made his first solo excursion into a southern swamp. His four-dollar purchase was flat-bottomed, narrow, and about fifteen feet long. For the next five days, he floated down the river, searching the section J. J. Brown had described. Using a paddle carved from a board, Tanner worked to stay in the middle of the river."
Excerpt from Ghost Birds. For more information go to:
Ghost Birds: Jim Tanner and the Quest for the Ivory-billed Woodpecker, 1935-1941
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Friday, September 17, 2010
old man turtle
“The turtle—silent in the autumn-morning mist. Gold lion paws are printed on his shell. On his head. His eyes are red. But gold is what you see. Gold leaf prints, lion’s paws. His ancient snaky head is wet. His shell is wet. He’s beautiful and big. He’s old and bright and washed by rain. His saurian feet are spotted gold, and scratch the cool and mossy stones. Old man, I love you in this autumn mist! I stand there staring at that shell as though I’d found a mound of gold. It’s that remarkable.
"He draws his head inside. He’s had enough.”
Old man is correct. Box turtles can live 140 years, probably even longer.
-Quote from “The Inland Island” by Josephine Johnson
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Wednesday, September 15, 2010
doing it: part 2
"Birds do it, bees do it..." Again, we'll take our lead from Cole Porter.
With snails, the textbook description of reproduction goes something like,
“Some snails are hermaphrodites, producing both spermatozoa and ova. Others, such as apple snails, are either male or female. Prolific breeders, snails in pairs inseminate each other to internally fertilize their ova.
A garden snail, Helix aspersa, is a hermaphrodite, producing both male and female gametes. Reproduction is usually sexual, although self-fertilization can occur. During a mating session of several hours (Yes, hours. So, the next time you hear the phrase "slow as snail," you should smile knowingly.) During this tantric encounter the two snails exchange sperm. (So both become gravid, i.e. pregnant.) The garden snail uses love darts during mating.
Quoting from Indiana Media's “Moment of Science” by Don Glass, “Since only a small part of a snail’s body extends outside its shell, it carries both sets of genitals–male and female–up front near the head.
Now here’s the strange part. About once a week, as garden snails share caresses, pressure builds up in the area surrounding a sac near the genital region housing a calcium dart. Just before the moment of sexual penetration, the impregnating snail stabs its partner near the genitals with what scientists have dubbed the snail love dart.
But what might sound like a nasty sadomasochistic ritual does have a practical purpose. According to one study, the darts are tipped with a chemical preventing the snail on the receiving end from digesting most of its mate’s sperm. As in many species, the garden snail’s female reproductive tract is hostile to sperm, allowing only the toughest and most resilient to fertilize the egg. To increase its chances of passing on its genes, the impregnating snail fires a dart to give its sperm a fighting chance.
Although snails can and do successfully mate without stabbing each other, studies have shown that darted snails store one-hundred-sixteen percent more sperm than undarted snails.”
"After about two weeks approximately 80 spherical pearly-white eggs are laid into crevices in the topsoil, while the weather is warm and damp. After two to four weeks of favorable weather, these eggs hatch and the young emerge. Up to six batches of 80 eggs can be laid in a year.”
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Tuesday, September 14, 2010
doing it
"Birds do it, bees do it, even educated fleas do it."
“Doing it.” Okay, that's a bit too crass, even lowbrow tawdry. Cole Porter can get away with it but, perhaps, not me.
But the millions of species found in nature use a dizzying array of reproduction techniques. Obviously the male and female have to get close to one another, at least for a moment in time.
With grasshoppers, the textbook description reads:
“The orthopteran courtship and mating behaviors are among some of the 'most complex and fascinating spectacles in the insect world, 'involving sound production and visual, tactile and olfactory signals" (The couple in the photo are in the intimate tactile stage.)
"During reproduction, the male grasshopper (in this case, the smaller blue tinted one) introduces sperm into the vagina through its aedeagus and inserts its spermatophore, a package containing the sperm, into the female's (the larger gold tinted one) ovipositor. The spermatophore, or sperm sack, can also include a large packet of nutritious proteins known as a spermatophylax. The sperm enters the eggs through fine canals called micropyles.
The female then lays the fertilized egg pod, using her ovipositor and abdomen to insert the eggs about one to two inches underground, although they can also be laid in plant roots or even manure. The egg pod contains several dozens of tightly packed eggs that look like thin rice grains. The eggs stay there through the winter, and hatch when the weather has warmed sufficiently.”
i.e. doing it.
- Photo by Wayne Mallinger
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Monday, September 13, 2010
cardinal RED
Native cardinal flower has been growing along streams and ponds throughout the south since the last ice age ended—some 13,000 years ago, but its name is much newer, although its provenance isn't native, or even American.
In 1620, the water-loving perennial was transported to Europe where it was cherished. Sometime around 1629, the hot red flower received its descriptive moniker, probably because of the similarity in color to the hats worn by Roman Catholic Cardinals.
Hummingbirds love it too.
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Sunday, September 12, 2010
September hummers
Sunday with Karen Sue: Yesterday’s photo by Wayne Mallinger has us thinking about the ruby-throated hummingbirds visiting our feeders. September is a big month for hummers, thousands are migrating through the Tennessee Valley.
Here are some basics:
Saturday, September 11, 2010
hummmmdinger
I just love getting e-mails from Wayne Mallinger from Madisonville because there's usually a wonderful photo attached.
This one is a hummmmmmmmm-dinger. It's a young male ruby-throated hummingbird (You can tell it's a young male because the dark gorget throat feathers are just starting to come in. A female's throat is white.)
Hummingbirds are migrating through the Tennessee Valley. Like a Cracker Barrel along the interstate, there has been a constant waiting line at my feeders.
Here's Wayne's notation:
"Spent an hour watching the hummingbirds near Tellico Plains yesterday. Could have watched all day. This one particular little'un would just hover and try to keep the others away from food. He was kind enough to strike a pose for me though. Still quite a few in area."
- Photo by Wayne Mallinger
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Friday, September 10, 2010
Battle of Franklin
"The almost forgotten Battle of Franklin was a death knell. “This is where the Old South died,” says activist Robert Hicks, “and we were reborn as a nation.” Leaving Lewisburg Pike, I walked along the rain soaked streets and soon found the two aged osage orange trees still growing in the vicinity of the railroad line. Historian Cartwright had told me about the old trees just an hour before. Both were perhaps descendants of the hedgerow that stopped Loring and, as such, were living monuments. It was a circuitous chain of events that moved osage orange from its native Red River home to this historic point of all out chaos; turn back the clock and replay the era, day by day, and it would not have unfolded in exactly the same way. I paused just long enough to admire the towering presence of the elderly trees; and as the rain began to fall heavy once again, I zipped up my coat, turned and walked away."
Excerpt from Natural Histories published by the University of Tennessee Press.
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Thursday, September 9, 2010
Sonny Boy
Wednesday, September 8, 2010
dove feet
Dove hunting season in Tennessee began a few days ago. I'll avoid Forks of the River, at least until the early zeal settles down and the shooting stops or all the doves move down to Ijams, a wildlife sanctuary.
The two mourning doves in the photo seemed quite content to be there.
I have nothing against hunters, my father was one, but I'm not sure how you could kill something with such pretty feet. What color is that? The field guides say they have reddish-pink feet but as an artist I wasn't quite satisfied with that descriptor. If I were to paint a mourning dove, what color would I choose?
I went on-line and did some research. I think the shade of red that is the closest match is alizarin crimson. What do you think?
The ancient Egyptians once fabricated the color by crushing the root of a rose madder plant. They used the resulting powder in paints and textiles dyes. If the pyramid-builders revered the color, I can only assume they would have liked mourning doves as well, or at least, their pretty feet.
Alizarin crimson
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Monday, September 6, 2010
ghost birds: kints
"The swamp played tricks on them, ringing with echoes. Tanner heard the “hooting,” as Sutton beckoned him in his direction. Kuhn had heard a “kint” south of their location, toward Sharkey Road. Both pileated and red-bellied woodpeckers were calling, keeping the searchers on their toes, nerves on edge. J.J. suggested they walk slower, so as to hear any unfamiliar sound."
Excerpt from Ghost Birds. For more information go to:
Ghost Birds: Jim Tanner and the Quest for the Ivory-billed Woodpecker, 1935-1941
Cover illustration by the author, that would be me.
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Sunday, September 5, 2010
redden up boys
Sunday with Karen: in house finches it's the reddest males that garner the most attention from the females. Oddly, the same is true in humans.
For other knoogling nature nuggets visit naturelovers.
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Friday, September 3, 2010
fork ridge
Recently, Rachael went with Karen Sue and I on a hike down Fork Ridge Trail on the Smokies crest. It's a sodden, verdent trail that descends downslope into North Carolina from Clingman's Dome Road. Here is some of what we saw.
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