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Smithsonian Conservation Biology Institute

If Light Can’t Escape Black Holes, How Do We Get Photos of Them… and More Questions From Our Readers

You asked, we answered

In areas made up of less than 70 percent native plant biomass, Carolina chickadees will not produce enough young to sustain their populations. At 70 percent or higher, the birds can thrive.

Ecologists Have this Simple Request to Homeowners—Plant Native

A new study shows how quickly songbird populations fall off when gardens are planted with exotic trees and shrubs

“It is especially exciting to see Sukiri bonding with and successfully raising these cubs,” says the Zoo's cheetah biologist Adrienne Crosier.

New Cheetah Mom Earns High Marks Caring for Her Three New Smithsonian Cubs

Cubs born to Sukiri on September 22 are latest in the National Zoo’s efforts to diversify gene pool of captive born cheetahs

Four Przewalski's horse foals—one filly and three colts—have been born at the Smithsonian Conservation Biology Institute since mid-March.

Four Foals Join the Herd of Przewalski’s Horses at the Smithsonian

This endangered species, native to Mongolia, China and Kazakhstan, is slowly being revitalized with the help of conservation scientists around the world.

The science behind the uptick in cheetah births includes a new fecal hormone method to determine pregnancy in the animals.

Zoo Announces Another Seven Adorable Cheetah Cubs Are Born

With wild populations threatened, emerging and new techniques in the breeding science is growing ever more critical

Clay's team captured 15 female gnus for study. Following controlled exposure to male mating calls in an experimental setting, the quadrupeds (and their offspring) were released back into the wild.

How Noisy Males Control the Gnu’s Cycle

New research shows that ovulation in Serengeti wildebeests is accelerated and synchronized by the yammering of eager males

Born June 30, the new scimitar-horned oryx is already beginning to explore her surroundings.

New Artificial Insemination Technique Successfully Breeds Critically Endangered Scimitar-Horned Oryx

This marks the first birth of an oryx through artificial insemination that did not rely on potentially fertility-compromising anesthesia

Guam kingfishers tend to incubate for 21 to 23 days. This female emerged from her shell after 22.

This Royally Adorable Baby Kingfisher Perpetuates a Species Extinct in the Wild

A fine soon-to-be-feathered friend joins the menagerie at the Smithsonian Conservation Biology Institute

In Asia, the biggest threat to elephant survival isn't ivory poaching but habitat loss. Here, men ride Asian elephants in Thailand.

New Research

In a Horrifying New Twist, Myanmar Elephants Are Being Poached For Their Skin

In Asia, the biggest threat to elephant survival has long been habitat loss. That may be changing

Once common along highland streams in Costa Rica and western Panama, the variable harlequin frog, Atelopus varius, is now endangered throughout its range, thanks in large part to a disease caused by the amphibian chytrid fungus.

These Captive-Bred Frogs Are Facing Predators and the Chytrid Fungus to Make It in the Wild

Scientists in Panama release 500 harlequin frogs, some wearing transmitters, in a first attempt to reintroduce the endangered species

Pavel will be on hand for viewing at the Great Cats habitat, rotating with the Zoo's Sumatran tiger and African lions.

Say Hello to Pavel, the National Zoo’s Latest Addition, an Amur Tiger

For the first time since 1948, a 10-year-old male Siberian big cat graces the D.C. menagerie

Moonlight's cub was born on June 17.

Meet the Zoo’s Newborn Red Panda Cubs, Who Just Opened Their Eyes

The three cubs were born within days of each other at the Smithsonian Conservation Biology Institute

A Smithsonian scientist and other researchers announce success in the first-ever cryo-preservation of zebrafish embryos using gold nanotechnology and lasers.

The Innovative Spirit fy17

A Cool New Way to Freeze and Unfreeze Zebrafish Embryos Using Gold Nanotechnology and Lasers

The downstream applications could make food cheaper, repair coral reefs and help restore frog populations

A female Limosa harlequin frog sports a miniature radio transmitter.

A Pioneering Force of Harlequin Frogs Set Out to Help Save Their Species

Outfitted with tiny transmitters, these frogs are released to face the challenging chytrid fungus that decimated their populations

“These males were still alive and living around the females, they just apparently weren’t getting any of the matings, or the matings weren’t working,” says Robert C. Fleischer.

Future of Conservation

Safer Digs for Tortoises Put a Damper on Their Love Lives

A new genetic study surprised scientists who learned the males were not breeding

Scimitar-horned oryx calf

Spring Brings a Wave of Baby Animals to the Zoo

Seven different endangered species born so far at the National Zoo and the Smithsonian Conservation Biology Institute

Roughly 70 pink pigeons exist in captivity around the world, including this one at the San Diego Zoo.

Future of Conservation

Threatened Species? Science to the (Genetic) Rescue!

This still-controversial conservation technique will never be a species’ panacea. But it might provide a crucial stop-gap

Two large litters of cheetah cubs were born at the National Zoo's Front Royal, Virginia, facility—the Smithsonian Conservation Biology Institute.

Future of Conservation

Two Litters of Adorable Cheetah Cubs Born in One Week

Smithsonian’s cheetah conservation program welcomes the springtime births after careful planning

A rare Eld's deer fawn was born at the National Zoo last fall.

Future of Conservation

Take a Walk on the Bright Side at the First Smithsonian Earth Optimism Summit

As an antidote to doom and gloom, a conference on Earth Day weekend, takes a look all the good that is being done

Smithsonian researchers found that otters that use tools aren't closely related.

New Research

Unlike Dolphins, Sea Otters That Use Tools Are Not Closely Related

Rock-bashing in otters is a very old behavior

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