The Bronx Zoo's Birdathon helps highlight the many animals that stop through New York City during migration season.
The gene is also important for body size in humans and other animals.
Study shows ground-level light similar to light from tall buildings in disrupting migratory bird behavior
Peregrine falcons can hit birds even faster than Johnson's powerball.
About 40 percent of pollinators like bees and butterflies are at risk, according to a UN-issued report.
But they have not been found in humans.
A fossil study shows Gastornis roamed around Ellesmere Island, Canada, when it was far warmer than today.
Some of the best medicine is being practiced by doctors whose patients aren't human.
At least one bird died this year after possibly colliding with another bird in the lights above the 9/11 Memorial and Museum.
Invasive grasses and fires threaten the bird's habitat.
The number of drones spotted trumped by the number of birds hit, data shows.
The spill is five times larger than originally estimated.
Authorities estimate 105,000 gallons of oil have spilled.
The heartland bird has lost 80 percent of its range in part because of renewable energy development.
The blackpoll warbler can fly nonstop for three days over the ocean.