Birds are among the most majestic creatures on this planet, and they have dominated almost all ecosystems and landscapes ...

But if you think about it, it’s pretty cool that a fossilized bird the size of a cockroach can shake up what scientists know about how bones developed in the first birds.

ANCHORAGE, Alaska -- A bird the size of a small airplane was recently spotted flying over southwest Alaska, puzzling scientists, the anchorage*** Daily News*** reported this week. The newspaper quoted ...

The dino femurs grew longer and thicker as body size increased, Chan says. But in birds, there was a “distinct plateau” between 300 and 500 kilograms, with femur length constrained by the need ...

A study published on Wednesday involving 70,716 birds killed from 1978 through 2016 in such collisions in the third-largest U.S. city found that their average body sizes steadily declined over ...