December 09, 2008

Gull Prepares a Meal

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Ring-billed Gull drops shell to reveal the meat

On our morning walk today I noticed some interesting gull behavior. They would fly strait up in the air with a shell in their mouth then toss it to the ground. Then they would drop down on the shell to eat the meat; kind of like using a nutcracker to get into a walnut. 

I was lucky enough to capture the behavior in the pictures above.

We saw this several times. I have to say that most of the time the shells did not crack open. They were only dropping it on the sand.

December 08, 2008

Shorebird Identification challenging

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Sanderling eating a scallop

Naming the birds that occur along the beach here is fun but it can be frustrating. Sometimes it is not at all obvious what the small birds are that run along the beach in front of us. Often I casually refer to them as "Peeps", which is a general term.

One of our guests this weekend (Mary) brought along the the Sibley Field Guide to Birds of Eastern North America. That book convinced us that with the dark shoulder (seen above) the bird I photographed this morning is a Sanderling.

December 03, 2008

How to Photograph Butterfly Wing Scales

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Tools needed to Photograph Butterfly Wing Scales

Photographing the tiny scales that cover the wings of butterflies requires a lot of gear. This morning I've been photographing the patterns of the brilliantly colored rectangular scales.

Here is the gear I am using:

A. Digital Single Lens Reflex Camera (DSLR) with remote release
B. Dissecting Microscope - Leica MZ8 with a 10X - 80X magnification
C. Dual Fiberoptic 150 Watt light source (Techniquip)
D. Compressed air, tweezers, small tools
E. Studio Monitor to check exposure and focus (video cable to camera)


December 02, 2008

Butterfly Wing Scales

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Magnified Butterfly Scales

Today I am starting to create a new series of images; butterfly wing scales. Above is one of my first attempts.

The picture reads a pure abstraction, simply a pattern. However, this is an unaltered close-up view of a butterfly's wing. The colored patterns on butterfly wings are created by minute scales or plates. These scales are pigmented but they also can have iridescence, like you see in the blue scales above. The iridescent colors are created by the play of light on the surface.

Thanks to Dr. José Leal for letting me have access to a dissecting microscope to do this work.

November 30, 2008

Sanibel - Birds

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Terns on the beach at sunrise

One of the reasons I love Sanibel is the birdwatching. There are lots of birds and many of them are large and tame. That makes for easy birdwatching and bird photography. This morning as we walked onto the beach at sunrise there were three Magnificent Frigatebirds floating just 30-feet over our heads. Spectacular!

Then, as we walked along the beach we saw a group of terns resting on a sandbar (see picture above).

Sanibel is an important destination for bird photographers because of the 5,000 acre Ding Darling  National Wildlife Refuge. One reason Sanibel will remain wonderful is that 65% of the lsland is protected by nature preserves.

October 17, 2008

Upgrade Fatigue: The tools keep changing every 18 months

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Today FedEx delivered yet another version of Photoshop

Artists using digital tools have to be prepared to go through frequent upgrades of every tool they work with. Today I got the 11th major revision of Photoshop. It is called Photoshop CS4. Adobe Photoshop CS4 and Adoble Lightroom 2 are the essential software programs that allow me to create my art. 

About every 18 months I have to upgrade or replace my:

  1. Computers
  2. Computer Programs
  3. Cameras
  4. Printers

The hardware and software upgrades were something that I used to look forward to; sort of like a kid at Christmas. My enthusiasms for upgrades has faded over the years. There is always a lot of new controls that have to be learned (and unlearned). Often there are software bugs that mess things up. 

Until I have mastered all the new features, my work is slowed down. I prefer to work when I know the tools so well that I don't think about what I am doing; then it is intuitive. 

Life would be much easier if I had remained a painter. The basic tools (brushes, paint and canvas) would not have changed over my entire career.

One option that I chose to ignore is skipping the upgrades. The software and hardware would continue to work for many years if I just left them alone. However, at this point I think the power of the new tools justifies the hassle and cost in time and money.

I wonder if the improvements (such as doubling of computing power every 18 months) will ever stop...? To read about Moore's Law click here.

October 16, 2008

Why are Summer Greens Boring?

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Research suggests that Healthcare art should show lots of "verdant vegetation"; in other words there should be a lot of green.

But the greenest time of year (mid-summer) is not when I want to be taking pictures. I find the continuous wall of dark green to be boring. There is just not enough variation. Fall has a rich mix of yellows, golds and reds; but Fall can have negative connotations - the impending end of the growing season; death. Not appropriate for healthcare.

Spring foliage is better than Fall. The leaves are fresh and there is a lot of variation in color and texture. But that magical time, when all the leaves emerge is over in a few weeks.

Reflecting on the variations in green in nature made me wonder: why is the green foliage in summer so monotonous?

I approached an expert, Dr. George Yatskievych, a botanist at the Missouri Botanical Garden.

Can you explain why summer greens are so boring? Is it related to the relative proportion of the different kinds of chlorophyl's or other chemicals in the leaves? Why does it vary with the season? 

I don't know why the summer greens seem boring.  I prefer to think of them more as subtle.  After all, eastern red cedars and shortleaf pines are still dark green and sycamores still tend to be a lighter green than oaks.  I think that you have to look harder for the variation, but it is there.

Plants produce only two kinds of chlorophylls, known as chlorophyll a and chlorophyll b.  Each of these has a unique, slightly different wavelength of light reflectance, but they do not contribute much to color variation in the green leaf.  In the spring, as the leaf develops, there is a lot of new chlorophyll produced in the rapidly dividing cells, but after the leaf has matured the amount produced is much less, tapering off.

Most often, the strong green color that results from the production of chlorophylls masks a variety of secondary compounds of various color, such as the reds and purples of anthocyanins and the yellows and oranges of carotenoids.  These occur in much greater variety than chlorophylls and are (along with some other chemical groups)  the compounds responsible for fall color.  To some extend, these compounds can modify the green of the leaf, darkening or lightening it somewhat in spite of the masking chlorophylls.

Leaf color is determined by more than just chemical compounds. In some species, the chloroplasts in the leaves physically align themselves so as to absorb the maximum amount of light.  In other leaves, the chloroplasts do not do so, or at any rate do so less efficiently.  This pattern of chloroplast orientation can affect light reflectance and thus the appearance of the leaf.  In other species, leaves are covered with waxy, powdery, or hairy indument, which can make them appear lighter or darker.

September 28, 2008

Monarch Butterfly Migration

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Monarch Butterfly feeding on nectar from New England Aster

I photographed this Monarch Butterfly today. The Monarchs are migrating south now that the growing season is ending.  The Fall wildflower that I see them on the most is New England Aster.

Migration has always seemed magical to me. How can a hummingbirds, which weigh only 5-grams (as much as a Nickel) have the endurance to cross the Gulf of Mexico (500 miles)?  Monarch butterflies routinely migrate farther than that, and they weigh less and are as delicate as a rose petal.

Do you see the second insect in the picture above?

Only after I started to work the picture up did I notice the Chinese mantis (Tenodera aridifolia sinensis). It is hanging just under the purple flowers; it's eyes are at the bottom. Great camauflouge! This is another example of an exotic (introduced) species.

September 25, 2008

Blazing Prairie - we set fire to our property

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Prairie Fire

This afternoon we set fire to our North Prairie. Managed burns like this are a key to maintaining our property: The Prairie Garden Trust.

Burns during the growing season, when the grass is still green (like today) tend to have more smoke and the flames don't go as high.

If you burn on a dry day in Winter the flames in the tall grasses can reach 20 feet into the sky. Very intense, loud, hot. smokey.

Once the burn is over and the fields re-grow, the greens seem even more intense in the prairie.

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August 17, 2008

A few days in Seattle

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Twin Falls State Park

Lorna and I are spending a few days in Seattle this week. The main reason for the trip is to get some ideas about how to manage the Prairie Garden Trust for the long haul. Much of the work we are doing with the landscape won't be fully apparent for 50 or 100 years. We want to learn from others how they are trying to reach long-term goals.

There is a private garden on Bainbridge Island that has some similar goals. It is called Bloedel Reserve.

In addition to some time there I'm also getting in some photography. For example, this morning at dawn we headed to the trail at Twin Falls State Park. We spent 3 wonderful hours hiking along the Snoqualmie river. I've attached one of the pictures I took along the trail to this post.

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