Navigational Theory 9: Sun Arc

In the 1950's, G.V.T. Matthews of the University of Cambridge tried to explain how pigeons use the expected placement of the Sun for navigation. Each day, they observe the Sun's position in the sky and compare it with where they expect it to be at any given time of the day in relation to their home. From this information, they then have all the information they need for figuring out their north-south and east-west displacement from home.