Routes in Migratory Birds

The migratory pattern in North American Birds tend to move in north-south direction. It is known that most migratory birds breed in the south and returns to the north. In general, it is found that birds living in the southern hemisphere will not migrate to the north as much as the northern birds travel. Some bird population only travel in the day, another in night, or even both. There is no direct pattern of what type of family travel when, however, this difference in time is advantageous for birds. It can be reduced competition or running away from predator. Birds can flight high up to 2000 to 4000 in the sky as well. Every bird has a different altitude they travel in.