A great shearwater flies off the coast of Tasmania. John Harrison/Wikipedia hide caption
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Researchers say the common swift is known for long periods of flight. Stefan Berndtsson hide caption
On display at ZooAve Animal Rescue in Alajuela, Costa Rica, Grecia, the chestnut-mandibled toucan, can now eat on its own and sing with the new beak. Grecia was in rehabilitation for months after receiving a 3-D-printed nylon prosthesis. Carrie Kahn/NPR hide caption
After Losing Half A Beak, Grecia The Toucan Becomes A Symbol Against Abuse
Yao honey hunter Orlando Yassene holds a male greater honeyguide temporarily captured for research in the Niassa National Reserve, Mozambique. The birds will flutter in front of people, tweet and fly from tree to tree to guide hunters to bees' nests that are hidden inside the trunks of hollow trees. This teamwork could date back thousands or even a million years. Claire Spottiswoode hide caption
One of the frigatebirds that researchers tagged soared 40 miles over the Indian Ocean without a wing-flap. These birds were photographed in the Galapagos. Lucy Rickards/Flickr hide caption
Nonstop Flight: How The Frigatebird Can Soar For Weeks Without Stopping
A sea gull got a day-glo makeover when it fell into a vat of chicken tikka masala in Wales. The bird was taken to a wildlife hospital that says it will be fine. Vale Wildlife Center hide caption
The prothonotary warbler can be found in the eastern United States. Flickr user John Jackson/Flickr Creative Commons hide caption
Parakeets are among Colombia's 1,900 bird species. Alexander Schimmeck /Flickr hide caption
As Colombia Grows Safer, Tourists — Especially Bird Lovers — Flock Back
The Tithe Barn at Avebury, owned by the U.K.'s National Trust, is home to a museum dedicated to the Avebury Henge. It's also now, unhappily, home to a very damaged thatched roof. The National Trust hide caption
For 15 years, biologists in single-person, ultralight aircraft would each lead an experimental flock of young whooping cranes from Wisconsin to a winter home in Florida. But not anymore. Dave Umberger/AP hide caption
Starlings migrating in huge numbers come to roost this time of year in Rome. In the past, the city used special speakers that emit sounds of predators and starling distress calls to make the birds fly elsewhere. This year, falcons have been enlisted to drive the starlings out — without success. Gabriel Bouys/AFP/Getty Images hide caption
The view at daybreak in Bosque del Apache, N.M. John Fowler/Flickr hide caption
Squirrels closely mimic bird warning calls and help spread the alarm through the forest that hawks, owls or other predators are nearby. iStockphoto hide caption
California condors have enormous wingspans. That's fine in the wilderness, but when a bird of this size encounters a power line, the results can be fatal. The San Diego Zoo Safari Park has a program to help train birds to avoid the hazard. Jon Myatt/U.S. Fish and Wildlife Service/Flickr hide caption