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Keywords from Image Description:
Ears of ground squirrels of California f. . en Ears of ground squirrels to show characters of size and shape in different species California Ground Squirrel Spermophilus beecheyi beecheyi Fisher Ground Squirrel Spermophilus beecheyi fisheri Oregon Ground Squirrel Spermophilus beldingi oregonus Stephens Softhaired Ground Squirrel