Draft 3 Week 9

Compass and some navigation skills are innate for birds. But there are some other components to help birds to orient themselves. In order to migrate, birds must have landmarks to guide them back home. Birds will remember the sights from the sky and uses that to take them back home. Some water, coastal birds would use flow of water and current to navigate themselves. This is not an inurt characteristic so young birds must learn from the older birds how to remember their route to home. This discovery allowed humans to train pigeons to send letters far away and come back after delivery.