Arctic raptors study reveals a new migration pattern, highlighting potential errors in range mapping

Traditionally, migratory birds are thought to arrive at their wintering grounds after fall migration and remain there until the spring migration back to breeding sites. This assumption forms the basis for determining over-wintering ranges and shaping conservation measures. However, a team led by scientists from the Max Planck Institute of Animal Behavior has discovered that over-wintering ranges may be far more dynamic.