Savannah sparrows in Bay Area tidal marsh (IMAGE)

University of California - Berkeley

Savannah sparrows in Bay Area tidal marsh

Caption

Phred Benham, a UC Berkeley postdoctoral fellow who wrote his Ph.D. thesis on genetic variation within saltwater-adapted Savannah sparrows, holds one of his subjects. The subspecies has lost 90% of its tidal marsh habitat over the past 200 years, making the birds subject to outbreeding supression because of interbreeding with more abundant freshwater-adapted Savannah sparrows.

Credit

Phred Benham, UC Berkeley

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