By the 1920s they were in the Midwestern states; they were in California by 1942. Their North American range now includes most of the continental United States, southern Canada, and northern Mexico.

It’s not just starlings either: Within the same time frame, Europe and North America have lost 550 million and 2.9 billion birds, respectively, due to habitat loss and other human-driven causes.

A newly published study has found that nearly 75% of bird species in North America are sharply declining across their ranges, and eight in 10 plummeting in the very areas where they’re thought ...

Three out of every four of the 500 North American bird species are in decline, a recent study found. But unlike the mass extinctions that killed off the dinosaurs, this one is driven by us.