Birds are getting smaller all around the world, suggests a new study. Indigenous people and local communities on three continents reported a "drastic" decline in the body mass of several species.

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Researchers have discovered a set of a prehistoric bird footprints that ...

A Michigan State University study, reported on by Earth.com, revealed thousands of bird species' survival habits. Many won't survive the changing climate. Researchers studied the link between bird ...