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Jonathan Ballou was the population manager and a research scientist at the Smithsonian Conservation Biology Institute in Washington, D.C. His research focused on the genetic and demographic problems confronted by small populations, especially of threatened species. He is recognized as a leader in developing the theoretical basis for the genetic management of small populations and in developing population management tools (software, applied theory) that are widely and internationally used by wildlife and zoo managers.
Ballou’s more recent activities have included co-authoring the text ‚Genetic Management

This small, fairly common songbird travels between cool, boggy northern forests and warm southern regions each year. Unlike many of their warbler cousins, they are often seen foraging on the ground, not in trees, while bobbing their tail.
Eastern adults in their breeding plumage have yellow undersides with brownish gray

The Zoo’s two giant pandas look quite similar to the untrained eye. Panda keeper Mariel Lally offers some tips you can use to spot the difference!
Eye Patches Image: The pandas’ eye patches have subtle differences.

Spending your days with a herd of bison is an idyllic way to pass a summer. I would know, because most of my days from May to August were spent observing the behaviors of a herd of about 300 bison in Montana.
For the last six months, I have worked with SCBI and the Reserve to study bison behavior

After a potentially deadly injury, one endangered wild horse got a new lease on life thanks to the Smithsonian’s veterinary team.
than their domestic cousins, a factor ungulate curator Dolores Reed believes may have

Smithsonian scientists, in collaboration with the Fort Belknap Fish and Wildlife Department, are embarking on a five-year swift fox reintroduction project to restore swift foxes to tribal lands and to help reestablish connectivity between disjointed swift fox populations.
the Fort Belknap Fish and Wildlife Department in Montana, Smithsonian scientists have

Recently, our Great Cats team bid farewell to African lion Amahle, who moved to another zoo to breed. Keeper Katy Juliano shares how Amahle’s mother, Shera, is adjusting in this update.
visitors to the Smithsonian’s National Zoo and Conservation Biology Institute may have

With their big ears, wide eyes and furry paws, sand cats may look adorable… but they’re quite tough! Sand cats are the only members of the cat family that live exclusively in desert environments. Get to know these hardy felines in this Q&A.
Many desert species—including sand cats—have a variety of physical and behavioral

Smithsonian scientists and partners provide free test kits for salamander pet owners to screen their animals for deadly diseases that are spread through the international pet trade.
The international pet trade can unintentionally spread diseases that can have devastating

Gadwalls may appear to be simple brown ducks from afar. But up close, their subtle beauty and intricately patterned plumage emerges. Gadwalls are dabbling ducks, meaning they feed by tipping their heads downwards to feed while floating—sticking their tails and feet in the air in the process. 
18-22 inches (46-57 centimeters) long, weigh 17-44 ounces (500-1,250 grams), and have