Double-crested Cormorant
Phalacrocorax auritus
Learn more about Phalacrocorax auritus from the Encyclopedia of Life

Everglades National Park,
Florida, USA
By Amy Marques
Port St. Lucie, Florida, USA
Taking a close look at the Double-crested Cormorant
reveals a beautiful, brilliant green eye with a ring of
blue raised dots. In contrast, its feathers appear dull
grey; they are not waterproof, even though the bird
possesses an oil gland at the base of its tail. The birds
are typically seen after they have been diving for fish,
perching with their wings outstretched in the sun and
wind. These gregarious cormorants are usually found
in flocks while breeding and migrating. Although
they use a range of calls in social situations, the birds
are largely silent. Males are known to use a “wing
wave” display to attract a mate.
“This single cormorant stood out from the other birds
lined up and napping on a low perch. I slowly inched
closer on my knees, filling my frame with the bird’s
lovely lines, textures, and watchful eye.” —AM
Canon EOS-1D Mark III; EF 70-200mm ƒ/2.8 IS USM
lens at 135mm; 1/200 sec at ƒ/7.1; ISO 400; extension tube;
Gitzo GT 3530LSV CF tripod; Kirk BH-1 ballhead.