Chipping sparrows migrate through the foothills on the way to higher elevations in the Sierra Nevada.  On the morning of April 17, 20007 I heard what I took to be an insect of some kind, but it turned out to be a sparrow perched on the top of a young oak tree with his head and wide open bill pointed at the sky broadcasting the following enthusiastically.

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What do I consider to be

Upper Bridgeport SP ??