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

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

Gliding flight - Wikipedia

Night Flight: Tracking Data Reveal When and Why Songbirds Begin

How Can Birds Sleep While They're Flying?

Frigate birds fly nonstop for months

Explorations 2017 by Lindblad Expeditions - Issuu

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

News & Features All About Birds

This bird species can fly for months at a time without landing

Bjorn's Corner: Synthetic Vision - Leeham News and Analysis

These Birds Stay Airborne Without Landing for Two Months

These remarkable frigate birds can fly without landing for months

Timmins news: Hands-free plane tested in Cochrane and Iroquois Falls