birds

An art historian and a biologist discovered a novel way to measure historical air pollution levels: looking soot caught in the feathers of birds from 140 years ago.

Fifteen years ago, the center of London was densely populated, not just with people, but with pigeons. But something has changed. One of the reasons can be found every morning in Trafalgar Square.

Results from Audubon’s 117th annual Christmas Bird Count are rolling in. What’s the bird count, you say?

One third of birds in North America are at risk of extinction. A century ago, a bold move by international leaders helped save many species. Can they do it again?One third of birds in North America are at risk of extinction. A century ago, a bold move by international leaders helped save many species. Can they do it again?

Half of North America’s 650 bird species may be forced to change their current habitats because of climate change or perish — including the bald eagle and the common loon. A new Audubon Society study produced maps to show people which of their local birds are at risk.