Hybrids — and maybe a full red wolf — found in former range
Red wolves (Canis rufus) were thought to be extinct in the wild, outside of a reintroduced population in North Carolina. But a pair of recent studies have found coyote (Canis...
Migration corridors follow food, avoid human disturbance
Looking across the Wyoming landscape, it might seem like mule deer (Odocoileus hemionus) could pick just about anywhere to cross between the high country, where they spend the summer, to...
JWM: Study finds bobwhites exposed to pesticides
Northern bobwhites (Colinus virginianus) have been declining mysteriously throughout their range. In Texas, biologists have watched their numbers fall for three decades, but they’ve been unable to determine why. In...
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WSB: At Shenandoah, park visitors and woodrats coexist
The Allegheny woodrat (Neotoma magister) is threatened or endangered across much of its geographic range, but it’s found a refuge in Virginia’s Shenandoah National Park, which has plenty of rocky...
JWM: Gene diversity high in Missouri deer
Some 1.4 million white-tailed deer (Odocoileus virginianus) roam in Missouri today, but less than a century ago, their numbers had dwindled to the verge of extirpation. It would be understandable,...
JWM: Unmanaged, nonnative macaques boom in Florida park
A population of nonnative rhesus macaques (Macaca mulatta) introduced in central Florida is set to double by 2022 unless steps are taken to reduce it, biologists found. But dealing with...
After decades of decline, could Sierra’s frogs recover?
For decades, the story of the Sierra Nevada yellow-legged frog (Rana sierrae) has been a bleak one. Once abundant in lakes and ponds in and around Yosemite National Park, the...
Study shows Yellowstone wolves’ impact on streams
When hydrologist Robert Beschta went to Yellowstone National Park, he was looking for the effects that elk (Cervus canadensis) were having on river systems as they browsed down willows on...
Did barn swallows evolve thanks to humans?
What would a barn swallow be without barns? According to recent research, maybe nothing at all. After studying the birds’ DNA, researchers believe it may be impossible to separate barn...
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