Like people, vultures get set in their ways and have fewer friends as they age

If you'd rather be watching TV on your couch than dancing at the club, you might have something in common with aging griffon vultures. New research shows that young griffon vultures move frequently between sleeping sites in different locations and interact with many friends but get set in their ways as they age, roosting in the same spots with the same individuals. As moving between roosts becomes a grind, older vultures follow the same path, establishing movement routines that are not seen in young vultures.