Review explores how birds can stay slim, even when they overeat

Noticing that songbirds, such as finches, never seem to get fat despite overeating at bird feeders, London environmental biologist Lewis Halsey wondered whether the amount of energy birds put into singing, fidgeting, or exercising ...

Examining new trends in citizen science

At the start of every year, most people will have made a list of New Year's resolutions. Some of the most common this year will be to get fit, adopt healthy eating habits and spend more time with the family. But have you ...

Snowy owls invade US 'south' as cold has effect

Reports from tens of thousands of bird-counting volunteers show a southern invasion of Arctic-dwelling snowy owls has spread to 25 U.S. states, and frigid cold is causing unusual movements of waterfowl.

Birders prepare for count mindful of mass die-offs

(AP) -- Thousands of citizen-scientists across North America are getting out their tally sheets for the 13th annual Great Backyard Bird Count, a usually festive weekend given a more serious edge after the mass deaths of thousands ...