Birds that cannot effectively withstand cold snaps are already further south than the continental United States.
Scientists thought that invasive large snails spelled doom for endangered North American snail kites, until some of the birds started eating them.
The population of wild turkeys has soared, and that has brought turkey-human clashes to rooftops, windows, and intersections across the country.
The feathers of birds preserved in natural history museum collections record changes to historical air quality across America’s Rust Belt, a new study finds.
Take a flight in 360° video with Widow, a golden eagle.