Double-crested Cormorant

Nannopterum auritum

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About This Species

The Double-crested Cormorant is a large, dark waterbird most often seen near lakes, rivers, reservoirs, and coastal waters. With its long neck, hooked bill, and low, purposeful posture, it is built for fishing. Often observed perched on snags, pilings, or rocks with wings spread wide, this species is a familiar and sometimes dramatic presence around open water.

Fun Facts

  • Expert diver: Double-crested Cormorants can dive to depths of 25 feet or more, using their powerful webbed feet to propel themselves underwater in pursuit of fish.
  • Wing dryers: After fishing, they often stand with wings spread wide to dry their feathers, as their plumage is less waterproof than most waterbirds, which helps them dive more efficiently.
  • Hooked bill: Their sharp, hooked bill is perfectly designed for catching and holding slippery fish, making them highly effective hunters.
  • Group roosters: These birds are highly social and often roost, nest, and fish in groups, creating impressive gatherings at productive fishing sites.
  • Wide range: Found across much of North America, from inland freshwater lakes to coastal saltwater environments, they are among the most widespread and adaptable waterbirds on the continent.
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