The double-crested cormorant, a diving water bird.

Cormorant

The double-crested cormorant, a diving water bird.

"Phalacrocorax dilophus. Double-crested Cormorant. Tail of 12 feathers. Gular sac convex behind. No colored gorget. Glossy greenish-black; feathers of the back and wings coppery-gray, black-shafted, black-edged. Adult with curly black lateral crests in the breeding season, but few if any other filamentous white ones, over the eyes and along the sides of the neck; white flank-patch not observed in any specimens examined, probable not occurring; iris green; gular sac and lores orange. Winter spec. with bill bright yellow, blackening along culmen, gular sac red anteriorly, ochrey-yellow posteriorly; legs dull black." Elliot Coues, 1884

Double-crested Cormorant

"Phalacrocorax dilophus. Double-crested Cormorant. Tail of 12 feathers. Gular sac convex behind. No…