Fall migration is happening earlier for a North American bird species that is already in rapid decline, adding pressure to ...

From Mexico to the mountains, Arizona’s hummingbirds are on the move. Here's when and how to spot them in Arizona.

Every spring, hummingbirds embark on an ambitious migration, flying thousands of miles from Central America and Mexico to breeding grounds in the U.S. and Canada. Hummingbirds migrate an average ...