Caspian Tern - Ross Feldner

The world’s largest tern is named after the Caspian Sea which is the planet’s largest inland body of water. Early ornithologists associated it with this body of water where it was common. Sporting sleek white, black and gray plumage and a bright orange dagger of a bill, this bird has an extensive breeding habitat covering most of the eastern half of the United States and the West Coast. It is at home near fresh or salt water.

The Caspian Tern feeds on fish, which they dive for, hovering over the water and then plunging down. It eats large insects, eggs, and the young of other birds and rodents. It also swallows whole fish headfirst!

When in their nesting grounds paired Caspian Terns fly in tandem to great heights during stunning courtship displays. They nest on open ground on islands and coasts. Their vocalization is described as a deep, harsh, heron-like scream "aaayayaum."

Caspian Tern Fun Facts

Caspian Terns are extremely aggressive when defending their colony even attacking people who get too close.

A small, artificial island in the Columbia River is home to more than 6,000 breeding pairs each year making it the world’s largest colony.

Learning to fish isn’t easy and young terns are fed by their parents for months after fledging.

The oldest known wild Caspian Tern lived to be more than 29 years old.

Caspian Terns are highly vocal. Chicks vocalize while they are still in the egg!

They were one of the species directly threatened by the BP Oil Spill Disaster of 2010.

Caspian Terns may fly up to 37 miles from the breeding colony to catch fish.

Click here to watch a Caspian Tern fishing.

Click here to watch Juvenile Caspian Terns follow their parents begging.

 

Rachel Carson Council
8600 Irvington Avenue  | Bethesda, Maryland 20817-3604
(301) 214-2400 | office@rachelcarsoncouncil.org

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