Birds use visual landmarks to help them travel and migrate long distances. Pigeons, for example, use railways, highways, and rivers even if routes are not direct. Some waterfowl follow watercourses to help them migrate but often they are scared to cross open bodies of water unless it is windy. They also use the sun as a compass. Homing pigeons and common starlings follow the sun to lead them home and will not travel until they can see the sun.
Recent comments