CASTLE DANGER -- A quick flitter in the treetops, then a chirp or short song is all it takes to get Anna Peterson to make a mark on her clipboard. She pauses on her walk through the woods, checks her ...

Sept. 3 (UPI) --The United Nations launched the world's first map Wednesday that shows the live migration of antelopes, guanacos, zebras and other land-hoofed ungulates currently facing threat by ...

ITHACA, N.Y. — New radar maps from the Cornell Lab of Ornithology show real-time nocturnal bird migration across the United States. The maps use the national weather radar network to chart bird ...

"Animal Trails: Rediscovering Grand Teton Migrations," a new Wyoming-made documentary, shows how the migration patterns often depend on habitats up to 190 miles away from Grand Teton National Park — ...

Hummingbirds are reaching the U.S.'s northernmost states as the small but mighty birds wrap up their spring migration season. Known for their impossibly fast wings and long, slender beaks, ...

Michigan's native birds are arriving for the summer from near and far, but you might not notice as many travel at night. "The movements are massive," said Andrew Farnsworth, a migration ecologist at ...

The study shows caribou herds changed their migratory duration, distance or elevation over 35 years of radio tag tracking. Decades of data following the migratory patterns of endangered caribou show ...