Animal migration has fascinated humans for millennia. And for good reason: Some of the most astonishing feats of endurance are performed by long-distance migrants, such as the nine-day non-stop flight ...

In late spring, as the days begin to lengthen, the mule deer of central Wyoming begin to “surf” the sagebrush landscape. Their break is found in the low flats where they spend their winters. That’s ...

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.