The endangered Delmarva fox squirrel (Sciurus niger cinereus) may be 30 inches long—much larger than the far more common Eastern gray squirrel. Also, the fox squirrel rarely leaps from tree to tree like its more agile cousin. The secretive mammal spends a great deal of time on the ground foraging for nuts in the open forests of mature oak and pine that it inhabits. As it ages, the fox’s silver-gray fur may turn almost white. Despite the differences, the endangered squirrel may still be hard to identify with certainty, silhouetted against the sky, high in a scrub pine.
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