Discover stories in Why is that happening?
Why Are You Seeing Lots of Vultures Now?
Large flocks of vultures are circling, but it’s probably not because something is dead.
The Disturbingly Long Tapeworms of Alaskan Bears
What’s that trailing from the bear? (It's not the cute cub)...It's an overlooked (and gross) creature of salmon ecosystems.
Why Do House Finches Love Your Hanging Plants?
House finches have become a backyard favorite. And they may even take up residence in your hanging plants.
Why Sick Bats Self-Isolate
Research shows that normally social bats self-isolate when sick.
Buffered by Bears: Why Foxes Hang Out Near A Top Predator
A new study suggests gray foxes use bears as a coyote buffer.
Holes and Weeping Trees: What’s up with the Yellow-bellied Sapsucker?
The sapsucker needs, well…sap. And lots of it. Here’s how it gets it.
When Mammals Glow in the Dark
Scientists are discovering dozens of mammals that glow under ultraviolet light, from flying squirrels to wombats to African springhares.
Take Down Your Feeders: Salmonella is Killing Songbirds
Bird feeding is spreading salmonella. Here’s how you can help.
Is Birdseed the Next Toilet Paper?
More people are enjoying backyard birds. Is that creating a seed scarcity?
Carolina Wrens Will Nest in Just About Anything
Forget the nest boxes: Carolina wrens want your grill, your flower pot, even your old boot
Why Carolina Wrens Have Moved into Your Neighborhood
Carolina wrens are known as woodland birds, but they’re increasingly sighted in suburbs and cities. Here’s why.
Why Pandas Are Rubbing Themselves with Horse Manure
It’s true: for years, giant pandas have been rubbing horse manure on themselves. New research suggests a reason.
