In 1987, biologists captured the last free-flying condor to transfer it to captivity, and the largest flying North American ...

A study of bird and bats in the wild showed that once the atmosphere is taken into account, flying can be the cheapest form of travel. The post Is flying the most energy-efficient form of travel for ...

Two birds can weigh the same, about 11 kilograms each, and still live in entirely different energy economies. An Andean ...

An international study has overturned a longstanding textbook view of how much energy animals use to travel, revealing that ...

Soar the Andean canyons with these enormous vultures, one of Earth’s largest birds. Learn about this at-risk species that can live up to 75 years.

Weighing 17 to 25 pounds and possessing a wingspan of up to 9.5 feet, California condors are the largest flying birds in North America. But in 1982, only 22 individuals were left in the world. Flash ...

Add Yahoo as a preferred source to see more of our stories on Google. PORTLAND, Ore. (KOIN) — A free-flying Condor entered Oregon for the first time in over a century, according to a statement from ...

A landmark study of 50 wild bird and bat species shows that riding atmospheric flows can make flying cheaper than swimming, ...

Andean Condor: Known for its impressive wingspan of up to 10.5 feet, it is one of the largest flying birds in the world, native to South America. Kori Bustard: Found in Africa’s savannas, it is among ...

PORTLAND, Ore. (KTVZ) -- Call it one of those local-bird-makes-good stories: The first California condor to hatch at the Oregon Zoo’s conservation center just turned 20 years old in California's ...

Lead poisoning remains the species’ deadliest ongoing threat, but wild-hatched chicks and new releases keep pushing the species’ numbers up ...

The California condor vanished from the wild entirely, but a decades-long fight to save the species has led to a remarkable milestone at the Arizona-Utah border this Saturday. Find out how ...