Migration is a survival mechanism for many species. Animals travel to find food, reproduce, reduce competition, escape predators or escape winter. Whether mammal, bird, fish or insect, a migrating ...

Migrating animals have for a long time been tracked by recapturing tagged individuals. More recently, radio-telemetry, which requires an observer to physically follow the tagged animal, has been used.

A new study has identified unexpected shifts in animal migration patterns, raising important questions about habitat ...