Cormorants (W)

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Phalacrocoracidae

The Phalacrocoracidae family of birds is represented by about thirty species of cormorants and shags. Cormorants or Shags are medium-to-large seabirds. The majority, including all Northern Hemisphere species, have mainly dark plumage.

They are coastal rather than oceanic birds, and some have colonised inland waters. They range around the world, except for the central Pacific islands.

All are fish-eaters, dining on small eels, fish, and even water snakes. They dive from the surface, though many species make a characteristic half-jump as they dive, presumably to give themselves a more streamlined entry into the water. Under water they propel themselves with their feet.

After fishing, cormorants go ashore to dry their wings by holding them out in the sun. Unusually for a water bird, their feathers are not waterproofed. This may help them dive quickly, since their feathers do not retain air bubbles.

Cormorants are colonial nesters, using trees, rocky islets, or cliffs. The eggs are a chalky-blue colour. There is usually one brood a year. The young are fed through regurgitation.

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