Joel Sartore Joel Sartore

National Geographic Photographer and Speaker

Photo: A gray color phase of the Eastern screech owl (Megascops asio) at the Wildlife Center of Texas in Houston.

BIR070-00184

A gray color phase of the Eastern screech owl (Megascops asio) at the Wildlife Center of Texas in Houston. Because the intergrade zones overlap, it is difficult to determine whether this animal is a Megascops asio hasbrouckii or a Megascops asio mccallii.

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