Sunday, December 1, 2013

The Tucson Valley CBC Map

Every CBC circle is 15 miles in diameter and is defined by its center coordinates. Formerly this was a location that one could locate on a topographic map so that the circle could be drawn (using a protractor or a ruler and clever use of a slide rule). But these days all you need is Google Earth and maps downloadable from the Internet.

The latitude and longitude for AZTV are 32.301632, -110.973489, and I've divided the circle into 27 areas, each with a team leader and a crew of birders to help spot, ID, and count as many birds as possible. Here's the map, which you can click on for a larger version to save to your computer if you want.

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