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Animals

A male blue jay on the left, a female green jay on the right and a hybrid offspring of the two species in the center.

Strange Bird Spotted in a Texas Backyard Is the First Known Hybrid Between a Blue Jay and a Green Jay

The ranges of the two parent bird species have expanded due to climate change and now overlap around San Antonio, researchers say

A historian inspects oysters from a reef on the Nansemond River, in Virginia.

Can Scientists Help Oysters Thrive Again?

Dredging and pollution devastated the once-bountiful reefs. Careful science may help bring them back

The orca known as “Old Thom” swims in front of researchers in the Bay of Fundy.

The Curious Case of ‘Old Thom,’ an Orca Traveling Alone in the North Atlantic

Sightings of the marine mammal captivate the public and baffle scientists

Roosevelt stands between the Sister of Rev. W.F. Bumsted, at that time mother superior of the convent, and the young King Daudi of Uganda, and is surrounded by members of the king's court at St. Mary's Convent, near Kampala, December 22, 1909

In 1909, Theodore Roosevelt Embarked on an Ambitious Expedition to East Africa. Here’s Why His Trip Still Matters Today

The 26th U.S. president is both lauded as a conservationist and condemned as a big-game hunter. A new book recounts the historic journey on which he helped form a significant collection of animals at the National Museum of Natural History

A jaguar, not the one documented in the new study, swims in the Pantanal in Brazil.

A Jaguar in Brazil Makes the Longest Recorded Swim by the Species, Traversing at Least 0.79 Miles Through Water

The new record could help conservationists strategize ways to consider feline movements during construction of hydroelectric dams

Chimpanzees in Uganda's Kibale National Park love eating figs, which scientists found had the highest level of alcohol at the site.

Chimps Consume the Equivalent of 2.5 Alcoholic Drinks per Day by Eating Fermented Fruit, Study Finds

Scientists report that chimpanzees consume about 14 grams of alcohol daily and suggest the result might help explain humans’ interest in booze

According to new research, the Chicago River has become significantly cleaner and healthier in recent decades. 

Fish Are Spawning in the Chicago River, Another Sign the Once-Contaminated Waterway Is Rebounding

A new study suggests at least 24 species of fish are reproducing in the urban river, adding to the evidence that it is getting cleaner and healthier

Inmate Willie H. feeds juvenile robins that are being rehabilitated in prison.

In Prisons Across Ohio, These Inmates Are Finding Meaning by Saving Orphaned and Injured Animals

The Ohio Wildlife Center’s hospital sends critters to five facilities for care before eventual release

Bull elk are fighting and bugling during their annual mating season in Rocky Mountain National Park and neighboring Estes Park in Colorado.

Amorous Elk Are Looking for Love Across North America in an Annual Spectacle Called the Rut

Fall is mating season for the large, antler-adorned ungulates—and you can catch a glimpse of them at several national parks in the United States and Canada

Ned (right) likely won't be able to reproduce unless another left-coiling snail is found.

A Rare, Left-Coiling Snail Needs Help Finding a Mate. New Zealanders Are Looking for Its 1-in-40,000 Match

Known as Ned, the creature needs a fellow left-coiling garden snail to reproduce—but the species almost always has shells that coil on their right side

An adult spotted lanternfly on a leaf in Pittsburgh

Swarm of Invasive Spotted Lanternflies Shows Up on Weather Radar Around Washington, D.C., Meteorologists Say

Using a variety of radar characteristics, scientists suggest the irregular detection was caused by bugs, instead of normal weather patterns

The researchers studied the genomes of thousands of ant specimens stored in museum collections.

Fiji’s Ants Are Struggling. Scientists Say They’re Part of the Broader ‘Insect Apocalypse’

New research finds that 79 percent of Fiji’s endemic ant species—those that are native to and only found on the archipelago—are in decline

A common octopus (Octopus americanus) raises its arm in southern Florida.

Scientists Map the Ways Octopuses Use Their Complex Arms, Revealing Preferences for Certain Tasks

The cephalopods appear to favor using their front arms, according to a new study, though their back arms help with locomotion

A sheep jaw bone was one of the samples analyzed in the new study.

New Research

Large Groups Came Together for Grand Feasts at the End of the Bronze Age in Britain

After analyzing bone fragments found in millennia-old trash piles, researchers say that people may have brought livestock from far and wide to consume in the south

Joro spiders are essentially harmless to humans and pets, but scientists are concerned about their impact on native species.

Scientists Want Your Help to Track the Spread of Invasive Joro Spiders at Great Smoky Mountains National Park

The invasive arachnids were first spotted in the park last year, and now, researchers hope to keep tabs on when and where they occur

Many rodents have nails on their thumbs and claws on the rest of their fingers. A new study suggests this trait might have been key to their world domination.

Rodents Conquered the World With the Help of Their Thumbnails, Study Suggests

The trait might have given rodents greater manual dexterity, allowing them to access new foods, such as nuts

A roman mosaic shows a fighting North African Atlas bear.

New Research

The Skull of an Ancient Brown Bear Tells a Story of Brutality and Abuse at the Hands of Roman Entertainers

The bear was caught in the Balkans and caged for years to perform in an amphitheater

The vaccine can be administered to koalas in a single dose.

A New Vaccine Could Help Save Australia’s Beloved Koalas From Chlamydia, and It Just Got Approved

The disease causes blindness, infertility, severe urinary tract infections and death in the iconic, furry marsupials, which are also threatened by habitat loss

A juvenile spotted ratfish. These deep-sea fish are named for their long, rat-like tails.

This Deep-Sea Fish Has Teeth on Its Forehead—and It Uses Them for Sex

Researchers suggest the rows of pointed structures on the heads of spotted ratfish are true teeth, offering the first known example of teeth located outside the jaw

The bumpy snailfish (Careproctus colliculi) is one of three new deep-sea species described.

Cool Finds

Biologists Discover Surprisingly Cute Deep-Sea Fish Species Off the Coast of California

Meet the bumpy snailfish—described by scientists as “adorable”—as well as the dark snailfish and sleek snailfish, all of which thrive thousands of feet below the surface of the Pacific Ocean

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