Nonstop Flight: How The Frigatebird Can Soar For Weeks Without Stopping : The Two-Way : NPR

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Scientists have been attaching transmitters on the huge seagoing birds and are astonished by their ability to stay aloft.

Caribbean BirdWatch – BirdsCaribbean

News & Features All About Birds

First evidence birds nap in flight without dropping out of sky

Frigatebirds sleep in mid-flight, Science

Frigate birds sleep while they fly. They have an ability to turn off half

To Avoid Bird Strikes, Just Tell The Birds To Move : NPR

Gliding flight - Wikipedia

First evidence of a 200-day non-stop flight in a bird