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June 04th, 2014

6/4/2014

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An experiment with Haiban

There were a few days in April when the yellow pollen of our neighborhood trees covered my porch, my barbecue grill, and outdoor table. They activated allergies of friend and adversary alike, and likely caused increased sales of over the counter antihistamines at local drugstores. Local folklore, probably based in fact, has it that more kinds of pollen occur here in the Tennessee Valley than anywhere else in the world, except for some unnamed valley in China. I heard the same statement about Cincinnati when I was a child there.

Meanwhile, I noticed an accumulation of catkins in the bed of my pickup truck.

Catkins cover land
Yellow dust lies everywhere
Fertile acorns grow

These particular catkins were the male flowers dropped by an oak tree, but several species of trees have this type of flower. The cylindrical structures indeed cover the land. I have heard them referred to as "wormy looking," though the name is said to be derived from their hairy covering and resemblance to a kitten’s tail. Land owners and landscaping companies send hours raking them up and moving them to more expendable parts of the landscape.

Catkins may hold male or female flowers, but unlike the illustrations in schoolroom science books, they never contain both male and female reproductive structures (anthers and style). The catkins on oak trees hold only male flowers. Female flower parts appear in separate, individual flowers on oak trees.

Like all annual events, I see the falling catkins as indication that life continues. The seasons continue to change, the earth produces its bounty, and I great the rising sun with exercises which keep my heart pumping and my joints limber. As my Tai Ji instructor puts it, “we keep moving so we can keep moving.”

Flowers fall from oak
Warm sun passes equinox
House wren sings from branch

See my reviews at Ray's Reviews 2,  http://rayzimmerman.blogspot,com 


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Ice on the Levee (Sunday, January 26, 2014)

5/28/2014

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The warm sunny day called me to the Brainerd levee, one of my favorite nature observation spots. It was well after 4:00 in the afternoon when I arrived and walked to the pond enclosed by a bend in the structure.

Absence was a notable feature this day. I saw few of the perching birds that normally dominate the skyline. No large flocks of American Robins or Cedar Waxwings filled the trees. One or two cardinals and a pair of Mockingbirds filled out the population, along with four European Starlings, strangely different from the huge winter flocks that often congregate on the driving range across the road.

As I reached the second bend, I was pleased to see large growths of mistletoe on the trees across South Chickamauga Creek, but the heron nests were gone. I remember one March day seeing a number of them sitting on nest. A Great Horned Owl with two chicks occupied one heron nest which it had claimed early that year. Neither Great Blue Herons nor Great Horned Owls graced the opposite shore on this day. The Great Horned Owl had surely nested elsewhere. She would normally lay her eggs in January.

Although open water was not totally absent, is was scarce. Ice covered most of the pond. In the open water on the far side I saw a flock of Northern Shovelers swim toward the shore in single file. Further on, two female ducks patrolled the icy water. A small group of Gadwall, two males and two females patrolled the open water near the shrubs. I am surprised these shrubs continue to grow, their roots in water soaked mud.

A flock of Green Winged Teal claimed the larger opening further down the shoreline. Though I saw no killdeer, four shorebirds worked the shoreline.

As I walked back to the parking lot and my truck, I noticed a small flock of Canada Geese crossing the sky over the levee. When I heard them call from behind me and turned to watch. Flock after flock followed. I would number them at 200 or so.

Starlings perch on cold branch
Ducks and geese patrol the levee
Depart when ice comes



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A Year Begins

5/26/2014

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New Year’s Day, 2014

I saw eleven Hooded Mergansers glide across the pond at Amnicola Marsh. I have loved the grace and delicate beauty of this particular species since I first saw seven cross Jemima Pond on Cape Cod some thirty years ago. The males seem to lift their white crests with each nod of the head in their gentle swimming strokes.  

Although the Hooded Merganser is a duck, its habits are quite different from the more familiar Mallard Duck and its close relatives such as Gadwall and Blue-winged Teal. These are puddle ducks. They tip up and grab water plants for their dinner with wide spatula like beaks.

The Hooded Merganser, along with such relatives as the Common Merganser and Red-breasted Merganser, is a fish eater. Its long narrow beak has a row of sharp narrow teeth fro grasping its prey. It body is small and built for speed. In addition to the white crest on the head, the males have a white breast and two black bars on each side, just in front of the wings. The flanks are a rich brown color with a hint of red and the wings and back are dark, nearly black, sometimes with white stripes.

Female mergansers are gray, with the upper parts darker and lower parts lighter. The belly is white. Their crest is generally described as brown, but I see it as a dull red. The crest can be lowered and raised, depending on the bird’s mood, and males are said to raise their white crest to attract the female’s attention. Apparently this strategy is fairly successful. Observers have recorded sightings of female mergansers followed by as many as 18 ducklings while swimming in wooded coves. I have never encountered commentary as to what use female mergansers make of their red crests.  

Like the equally lovely Wood Duck, mergansers nest in hollow trees or in boxes which humans construct specifically for that purpose. The young bird’s first experience is free fall from a height. The Wood Duck’s young bounce when they land. This is likely true of Hooded Mergansers as well. The elasticity of the body which allows a young bird to bounce reduces the likelihood of injury on landing.

On this day, a few coots and mallards accompanied the Hooded Mergansers. They paddled about the shallows as a heron crossed the pond. Its stately wing beats kept it just above the surface.

I found Chickamauga Dam clouded in dense fog. I could barely make out the concrete structure and the river. I saw no birds at all. The heron rookery just off Amnicola Highway abandoned. The birds were not yet ready to resume nest building. A flock of Gadwall navigated the stream. Though I have heard some birders refer to Gadwall as nondescript, the dark rump stands out against any background. The white on the trailing edge of the wing is not always visible, but it is a sure sign of this species.

Ice in winter home
No water plants or fish to eat, water
Birds move further south

Just as T.S. Elliot saw the world end, “not with a bang, but a whimper,” I saw the year begin with only a few species of birds. I had returned to Amnicola Marsh hoping to see the 35 Hooded Mergansers I had seen on this same day, a year ago. This year followed a different course, with many species visible in smaller numbers early on. The small ponds and marshes froze over in January, and likely the normal winter residents moved further south.


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