Severe space weather events, especially in overcast conditions in autumn, hinder birds' ability to migrate at night, a new study shows.

New findings from the La Brea Tar Pits in southern California suggest human-caused wildfires in the region, along with a warming climate, led to the loss of most of the area’s large mammals.

Some migratory birds seek the same weather conditions all year long to avoid the changing seasons. New research digs into how.

Why did more animal species from Asia make the leap to Australia than vice versa? A new study may have some answers.

People with a common history – often due to significant geographic or social barriers – often share genetics and language. New research finds that even a dialect can act as a barrier within a group.

More than 11 million migrants who lack papers live in the United States, and many of them are ineligible for health coverage.

More and larger spots may help monarch butterflies survive their long migration. The spots may change airflow patterns around their wings.

High temperatures are also a cause of illness and death for migrants.

"We need a collaborative approach to saving this species and that means connecting with partners abroad and at home."

A Steller’s sea eagle, native to the Asian Arctic, has traveled across North America since 2021. A scholar questions whether the bird is lost – and how well humans really understand animals’ actions.