Unpredictable Whale Migration Patterns
Whale migrations are growing less predictable: gray, right, and sperm whales increasingly leave long-established routes, arrive off schedule, or strand far outside their range. Researchers link these shifts to warming seas, collapsing prey, and possible disruption of the animals’ magnetic navigation, though no single cause explains every case. Animals often do the thing the textbook […]
The Sudden Vanishing of Bees: CCD
In the autumn of 2006, a Pennsylvania commercial beekeeper named David Hackenberg trucked roughly 400 colonies of Apis mellifera from the Susquehanna Valley to a wintering yard in central Florida. When he came back to inspect them in early November, the boxes still stood. The honey was still in the supers. The queens were still […]
Mystery of the Monarch Butterfly Migration
What Is the Mystery of Monarch Butterfly Migration? The mystery of monarch butterfly migration is that no single butterfly completes the round-trip journey. Each year, a “super-generation” born in late summer flies up to 4,000 kilometers from Canada and the northern United States to a forest in central Mexico its parents and grandparents never saw, […]