Category Archives: Birds

Oriental Turtle Dove

This gallery contains 3 photos.

The Oriental turtle dove (Streptopelia orientalis) are found throughout Eurasia east to Japan. There are at least six subspecies. They inhabit the middle to low latitudes year round. Birds breeding in higher latitudes migrate south for the winter. Oriental turtle … Continue reading

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Cliff Swallow Adaptation

This gallery contains 2 photos.

One of our Christmas books from Son Matt was Darwin Comes to Town by Menno Schilthuizen. This excellent book discusses how urbanization is accelerating and changing evolution. In the book are many examples of HIREC, Human-Induced Rapid Evolutionary Change. The … Continue reading

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Raven Relationships

While photographing wildflowers on the California Coast (Dry Lagoon Beach in Prairie Creek Redwoods State Park) in May, a common raven (Corvus corax) was very interested in our activities. The raven followed Leonard and me around and closely watched our … Continue reading

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This gallery contains 4 photos.

Coevolution occurs when two or more species interact so that the evolution of both is affected by the selective pressure each exerts on the other. Mutualism is when the interaction of two species contributes essential benefits to the other. Mutualism … Continue reading

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Two Species?

Currently there is only one species of willet (Tringa semipalmatus). Some birders recognize two subspecies, the western inornatus and the eastern semipalmatus, and believe the subspecies should be designated as separate species. Species (and genus) designation decisions are made by … Continue reading

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Courting Wild Turkeys

This gallery contains 4 photos.

After many years of decline, wild turkeys (Meleagris gallopavo) are now found in all continental states. There are four wild turkey subspecies within the United States, with two additional subspecies found in Mexico. Wild turkeys prefer open woods bordered by … Continue reading

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Lark Sparrow

This gallery contains 4 photos.

The sole member of its genus, the lark sparrow (Chondestes grammacus) is our largest open-country sparrow.  It is found singly or in flocks of up to about 50 members on the prairies and on mesas, along roadsides, and in fallow … Continue reading

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