wildlife

A green-crowned brilliant hummingbird feeds on a cactus flower in Costa Rica. 

Uncovering the Secrets Behind Hummingbirds' Extreme Lifestyle

Here's how the aerial acrobats are able to survive on a nearly all-sugar diet, fly higher than many helicopters can and migrate over the open ocean

The Marco Polo sheep is a subspecies of argali, the largest living wild sheep.

Montana Rancher Who Created Giant, Hybrid Sheep Sentenced to Six Months in Prison

Arthur “Jack” Schubarth cloned illegally imported genetic material from the Marco Polo argali to create hybrid sheep that would draw higher prices from hunting preserves

480 Otis, a beloved brown bear made popular by the Explore.org bear cams of Alaska’s Katmai National Park and Preserve, hunts for salmon at a popular bear fishing spot known as “the jacuzzi” on July 20, 2014.

The Chonky Superstar of Fat Bear Week Is Missing, and the Competition Won't Be the Same Without Him

While other bears battled over fish in a prime spot, Otis would sit off to the side and wait for the fish to come to him. But so far this year, he hasn’t been spotted in Katmai National Park and Preserve

A new study suggests that coyotes, like the ones seen here, have the same face muscle as dogs that's used to make pleading "puppy eyes."

Coyotes Might Make 'Puppy Eyes,' Suggesting the Facial Expression Evolved for More Than Just Cuteness

The wild canines have the same muscles used by domestic dogs to create the wide-eyed, pleading look that captures humans' hearts

Scientists observed two bowhead whales synchronizing dive schedules whenever they were within earshot of each other.

How Did Two Bowhead Whales That Were 60 Miles Apart Sync Their Diving?

Researchers suspect the marine mammals may have been communicating across the vast distance

A biologist holds a Bethany Beach firefly, found on a survey in 2019. The dwindling species is now being considered for protection under the Endangered Species Act.

This Green-Flashing Firefly Could Become the First Ever Listed as Endangered in the U.S.

The Fish and Wildlife Service will consider granting federal protections to the Bethany Beach firefly, which is rapidly losing its coastal habitat to development and climate change

A sloth in its natural habitat in Costa Rica, where sloth populations have decreased in the past decade, according to Rebecca Cliffe, lead author of the research.

Amid Rising Temperatures, Sloths' Slowness May Put Their Survival at Risk

The world’s slowest mammal is at risk of extinction by the end of the century due to their low metabolic rate and climate change

Some species of sea robins, such as Prionotus carolinus, use their leg-like appendages to dig out and taste prey beneath the sand. 

These Fish Have Legs—and They Can Use Them to Taste Prey

Sea robins have "the body of a fish, the wings of a bird and multiple legs like a crab"

Pesto's fame took off after the aquarium threw him a gender reveal party earlier this month.

Meet Pesto, the Biggest Baby Penguin This Australian Aquarium Has Ever Seen

Most adult king penguins weigh between 31 and 37 pounds. At nine months old, a 51.8-pound Pesto is already looming over his parents

A rarely seen whiplash squid swims more than 3,500 feet below the surface of the Pacific Ocean.

See Ten Strange and Mesmerizing Creatures From the Deep Ocean, From Sea Toads to Frilled Sharks

Scientists who explore the depths using submersibles continue to discover amazing animals that inhabit dark waters

The Australasian narrow-nosed spookfish (Harriotta avia) has a long snout and a whip-like tail.

Scientists Discover a New Species of Elusive Ghost Shark

Called the Australasian narrow-nosed spookfish, the cryptic species lives deep in the ocean off the coasts of New Zealand and Australia

A team of scientists in the Red Sea captured footage of a big blue octopus hunting with other fish species.

Watch Octopuses Team Up With Fish to Hunt—and Punch Those That Don't Contribute

The collaboration across species reveals a surprising social behavior of octopuses, researchers say

A fledgling peregrine falcon practices hunting with a butterfly.

See Ten Striking Images From the Bird Photographer of the Year Awards

The annual contest unveiled its winners, highlighting avian photos that focus on conservation issues, the beauty of birds and their sometimes hilarious behavior

Moo Deng, born this summer, with her mother Jona at Khao Kheow Open Zoo in Thailand.

'Adorable' Baby Hippo Moo Deng Is More Than a Viral Sensation. She Offers a Rare Glimpse of an Endangered Species

The baby pygmy hippopotamus in a Thailand zoo has taken the internet by storm, and keepers hope she will help gain momentum for conservation efforts

Cinnamon, the escaped capybara, was born at Hoo Zoo, along with her twin brother, Churro. They live there with their parents, Chimu and Chincha.

A Runaway Capybara Is Evading Capture and 'Living Her Best Life' in England

The “beloved” rodent named Cinnamon was spotted this week with help from drones. She has been wandering and eating grass after escaping her zoo enclosure last Friday

One eagle fights another for a midshipman fish in a behavior called kleptoparasitism.

'Pirate Seabirds' Could Become a Pathway for Deadly Avian Flu to Spread to Australia, Study Finds

Kleptoparasitism, in which a bird harasses another to steal its food, might introduce avian flu to the continent, currently the only one without the severe H5N1 strain

The hoiho, or yellow-eyed penguin, is thought to be one of the world's rarest penguin species.

Rare Yellow-Eyed Penguin Wins New Zealand's Bird of the Year Contest

The noisy-but-shy bird, known as the hoiho, has earned the most votes for a second time amid threats to its survival

Divers saw nine species of game fish and soft coral starting to grow on the submerged cars last month.

No Longer Full of Commuters, Atlanta's Old Subway Cars Are Now Filled With Fish

Two Metropolitan Atlanta Rapid Transit Authority railcars were added to an artificial reef off the coast of Georgia to create more wildlife habitat

American redstarts and magnolia warblers were thought to fly together merely by coincidence, but new research suggests they might be forming a social relationship.

Birds Form Surprising Relationships With Other Avian Species During Migration, Study Suggests

New research indicates that birds are not alone while migrating—and sharing space with other species may even help them on the journey

With a white frame around its eye and green feathers, this Swinhoe’s white-eye is easily camouflaged when flying from flower to flower.

See 15 Amazing Photos of Beautiful Birds

These Smithsonian Magazine Photo Contest images celebrate our feathered friends

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