Latest Overwintering Stories
Researchers have tracked the tricky migration patterns of monarch butterflies and revealed new details about the majestic insect's life cycle in the process.
Millions of monarch butterflies from across the eastern U.S. begin a southward migration each fall to escape the frigid temperatures of the northern boundary of their range. They travel up to 2,000 miles to reach an overwintering site in a very specific grove of fir trees in central Mexico.
The phenomenon is both spectacular and mysterious: How do the insects learn these particular routes and why do they stick to them?
Polar-ornithologists of Jena University explain flight routes of skuas with international team.
- The abrogation of a law by a higher authority; annulment.