A new study reveals mountain birds migrate primarily for food access, challenging previous beliefs about temperature-driven ...

Researchers have found that the risk of extinction for mountain birds due to global warming is greatest for species that occupy a narrow range of altitude. In fact, a species' vertical distribution is ...

Just as tourists are making their return to Summit County to kick off the summer this Memorial Day Weekend, millions of birds are also making an annual migration to nest and breed in Colorado’s Rocky ...

WASHINGTON (AP) — A meticulous re-creation of a three decade-old study of birds on a mountainside in Peru has given scientists a rare chance to prove how the changing climate is pushing species out of ...

Editor’s note: Local wildlife photographer Rick Spitzer wrote this story for the Eagle County Community Wildlife Roundtable. If you set out bird feeders, you are not alone. The U.S. Fish and Wildlife ...

Many bird species have moved toward colder areas in the mountains of Europe as the climate has warmed over the past two decades. Sunny southern slopes attract birds to live at higher elevations than ...

For the present the mountains, in reporters’ language, were “ on private view; ” and for all the ignorance of railway officials, I was one of the elect. In plainer phrase, I had in my pocket a letter ...

How to identify: Like all chickadees, the mountain chickadee has striking black-and-white markings on the head and gray elsewhere. The white stripe over the eye identifies mountain chickadees from all ...

Birds are moving higher up mountains due to climate change, reveals new research. Many species have moved toward colder areas in mountain ranges across Europe as temperatures have risen over the last ...