Snow geese were on the move, heading north. Check out a map of the snow geese migration Huge flocks were feeding in fields and flying overhead through the day and night. Even at 9 p.m., when all ...

A tracking study has revealed the secrets of the world's highest bird migration - the Himalayan flight of the bar-headed goose. The geese have been recorded at heights of more than 7,000m (23,000ft).