How do birds ‘get helped’ in navigation while undertaking long distance flights?


Birds have much sharper eyesight and better virtual memory of ground clues than humans. However, in long-distance flights, birds appear to navigate with the help of the Sun and stars, possibly in combination with a ‘reading’ of the Earth’s magnetic field. This is achieved through an inbuilt ‘magnetic compass, which is a tiny mass of tissue, between the eye and the brain, in birds.