Short-short stories with Phil

Many years ago my brother Phil and I wrote stories together. It was a game. I’d write an introductory sentence, and he’d follow it with something. The art was to try to throw the other guy a curve while still maintaining a sense of direction in the “plot.” I found these two stories in my archives. My parts are in standard face, Phil’s are in italics. You should try this sometime.

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Cricket Thermometer

Years ago, when I was a kid, I heard about a Frank Lutz study in which snowy tree crickets could be used as a thermometer by counting their chirping rate, which, because they are poikilotherms, varies with the ambient temperature. At the time I thought that was interesting, but a little irrelevant, since I had a thermometer. But we don’t always have a thermometer when we’re, say, camping, so a few years ago I had my Biology class make a thermometer by going outside, recording the temperature, and counting the chirps per minute of our local crickets. I don’t know the cricket species, but it is a common one in late summer when school starts. Here are their data, compiled to show a good polynomial fit. The linear equation, upper left, is also a good fit at r = 0.96.

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Most Abundant Butterflies: Bear Creek Canyon

Here are graphs showing the 18 most abundant species of butterflies in each summer month or half-month. These are based on 23 years of observations of tens of thousands of butterflies. The y-axis shows the numbers of butterflies noted per hour of observation time. This is a historic record, and I understand that many readers will not know the scientific names of these butterflies, but I am illustrating the three most common above each graph. Nymphalis antiopa, the mourning cloak, hibernates as an adult and flies on the warmest days in February. Celastrina lucia is the tiny spring blue that sometimes congregates at mud spots. Its taxonomy is still uncertain. It is the most common butterfly in the canyon from April through early June. In July, its numbers fall off and it is replaced by a series of brush-footed butterflies that are of medium size and generally orange and black in color. Limenitis weidemeyeri is a large black butterfly with bold white bands across the wings. In July, the silver spots (Speyeria) and a couple of skippers (Poanes and Euphyes) become common.Screen Shot 2017-05-23 at 10.51.50 PM

April

This amounts to about 26 butterflies per hour.

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Early May

This amounts to about 43 butterflies per hour.

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Late May

This amounts to about 60 butterflies per hour, but over half of them are the little Spring Azure Blue.

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Early June

This amounts to about 58 butterflies per hour.

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Now we’re at about 72 butterflies per hour. Quite a jump from June.

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And all the way up to 76 per hour…

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Late July

Then, rather suddenly, back to about 44 butterflies per hour. Clearly, July is butterfly month in the Colorado foothills.

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August

Or about 55 butterflies per hour.

By September, numbers drop to about 20 butterflies per hour in random habitats. But from late September through October and into November, butterflies can be found in large numbers on rabbitbush, Chrysothamnus nauseosus. On these bushes, I have found 145 butterflies and over 200 day-flying moths in less than a half hour. That’s an average of about 290 butterflies per hour!

More early emergence records

This spring continues to be the warmest I’ve seen, with new early emergence records rolling in each week. Today in Bear Creek I found Erynnis telemachus, the Rocky Mountain duskywing, usually not seen until the second week of April, and Celastrina lucia, the spring azure blue, which usually starts flight around April 5th. Pussy willows in full bloom draw in large numbers of butterflies if you stop and look closely. All of the following are early records in 2017.

Erynnis telemachus, a surprise, especially because another species, E. brizo, usually flies first, and it hasn’t been seen yet.

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Celastrina lucia, the spring azure blue.DSC02487

Pieris rapae, the European cabbage butterfly, an import– in some parts of North America, the most abundant butterfly.DSC02468

Nymphalis milberti, Milbert’s tortoise shellDSC02475

Archiearis infans, the Infant moth, photographed in the net and released.DSC02472

 

Unconformity on Shelf Road

Precambrian granite (about 1.6 billion years old), distinct to the practiced eye from Pikes Peak Granite, sits directly under the Ordovician Manitou Limestone (~ 450 million years ago), which has fossilized scales from jawless fishes. This contact represents over a billion years that’s missing from the geologic record (at this site). That means that the old granite probably had a series of overburdens that may have represented many events, but the evidence has all eroded away, leaving the nearly flat erosional surface, upon which the seafloor sediments accumulated that became the limestone. On Shelf Road you can put your finger on over a billion years of missing time.screen-shot-2017-03-04-at-10-18-49-pm.png

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Early and Late Records for El Paso County Butterflies

Here is a list of my personal records for the early and late observations of about 170 butterfly species in El Paso County. I hope that other naturalists will make notes and contact me with new records. Collected specimens are the best way to verify sightings, but photographs usually work.

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