As birds fly over cities, light pollution can blot out stars and disrupt natural navigation. They can wind up trapped and ...

The birds were eliminated when the invasive brown treesnake was accidentally introduced to the island of Guam in the ’40s.

Driven by climate chaos, Lesser Goldfinches abandon the south and conquer the north. Warm cities and rivers act as launchpads ...

New research shows that Lesser Goldfinches, a small songbird traditionally found in Southwest USA, are expanding their range northward through the Pacific Northwest at an unprecedented rate, providing ...