Do introduced bighorns never learn to migrate?
While bighorn sheep restoration became common after the species faced population declines in the 1900s, researcher recently found that restored populations differ ...
migration
Wyoming to build two wildlife underpasses
The Wyoming Game and Fish Commission plans to spend $1.25 million to build two wildlife underpasses in western Wyoming on Highway 189. Commission officials say the ...
For declining warblers, winter brings most to same spot
After placing geolocators on prothonotary warblers (Protonotaria citrea) in a number of states, researchers found that wherever the birds depart from, most travel ...
Captive-bred monarchs don’t migrate
When either breeders or eager citizens raise monarch butterflies, they may be raising individuals that can’t migrate, according to new research. The idea to study ...
Scientists track hoverfly migration
Researchers are using radar to understand more about insect migrations. In southern England, scientists run a network of small radar stations that scan the sky 24 ...
For some songbirds, migration ends in a shark’s mouth
When Marcus Drymon was conducting his usual shark surveys in the Gulf of Mexico in 2010, he wasn’t surprised to catch a small tiger shark (Galeocerdo cuvier). The ...
Sleep-deprived songbirds make ‘marathon’ journeys
Could the ways that songbirds prepare for their migrations apply to humans, too? Biologists at Penn State think so. “Imagine if you became morbidly obese before ...
Coming north, blackpoll warblers leave threatened landscape
As blackpoll warblers (Setophaga striata) start to return to the Great Lakes Basin on a stopover to Alaska and northern Canada, attention is turning to their ...
Watch: Tracking the monarchs to Mexico
Before the 1970s, where monarch butterflies overwintered was a mystery. Then researchers succeeded worked with Mexicans to trace the migration to the hills of ...
Fall of the monarchs
Over the last two decades, the number of monarch butterflies (Danaus plexippus) in North America has plummeted by approximately 90 percent — in part due ...