Double-crested cormorant

The Double-crested cormorant, scientifically known as Nannopterum auritum, is a fascinating bird commonly observed around Summerville, South Carolina. This species, first described by R.P. Lesson in 1831, is easily recognizable due to its unique appearance and behavioral traits. Double-crested cormorants are medium to large-sized waterbirds that typically exhibit a long neck and a hooked bill, which they use to catch fish—one of their primary food sources.

These cormorants are known for their distinct double crest, which is more pronounced during the breeding season. Their plumage is predominantly dark, with a glossy sheen that can appear greenish or bluish in certain lighting conditions. When perched, they often spread their wings wide to dry them, as their feathers are not waterproof, making them excellent divers but requiring them to sunbathe after fishing.

In Summerville, you may spot these birds near lakes, rivers, and coastal areas, where they dive underwater to hunt for fish. Their impressive swimming ability allows them to pursue prey with agility. Observers often see them swimming with just their heads above water, making them appear almost like a floating log. The Double-crested cormorant plays a vital role in the local ecosystem, helping to maintain fish populations and contributing to the natural balance of aquatic habitats.