Given the energetic effort required for migration, a device must weigh less than 5% of a bird's body weight, and many migratory songbirds weigh under 0.7 ounces (20 grams).

Every year, billions of birds undertake intrepid journeys between temperate regions in North America and their tropical wintering grounds in South America.

Radar data from Colombia reveals how tropical winds shape bird migration and pose new challenges for conservation.

Insights into birds' migration routes Date: July 21, 2014 Source: Wiley Summary: By tracking hybrids between songbird species, investigators have found that migration routes are under genetic ...

Mapping bird migration. Article by Lauren Bradford Photos courtesy of Kyle Horton October 07, 2020. New metric may redefine land management along migratory routes ...

For centuries, scientists have been working to unravel the many mysteries of bird migration, studying where birds go, how they find their way, and how much of the information they need is ...

Birds largely rely on their sense of smell to navigate on their long migration routes. Indeed, the “third sense” has been shown to be a more important for them than orientation based on the ...

Scientists sniffing bird breath to help protect migration routes February 14, 2005 Kent A. Hatch was the first to use isotope ratio mass-spectroscopy, a method of measuring different kinds of atoms, ...

Different bird species have different migration strategies, with some being more flexible than others to environmental changes, said Scott Loss, professor of natural resource ecology and ...

While you slept one night this week, an estimated 6.3 million migratory birds flew over Colorado at an average speed of 13 mph and an average altitude of 3,600 feet. And of those, 1.75 million of t… ...

With fall bird migration currently reaching peak numbers, live migration maps on the website BirdCast provide a real-time look as billions of birds wing their way south across the U.S. en route to ...

Birds migrate along ancient routes — here’s how scientists are studying their journeys Technology is providing new insights into bird migration, revealing that it is more complex than we ever knew ...