Adult with Double-crested Cormorant for size comparison. Note: thinner neck, dark and thin bill, and long tail. Pelagic Cormorants frequently perch like this (on ledges).

Adult with Double-crested Cormorant for size comparison. Note: thinner neck, dark and thin bill, and long tail. Pelagic Cormorants frequently perch like this (on ledges).

Photo courtesy of Joseph V. Higbee
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