Animal migration petters

Animal migration pertains to the seasonal movement of animals from one location to the other with a different purpose so sometimes it may include breeding or search for longer days during winters. Most creatures such as birds, mammals, fish and insects observe diverse migration routes. For example, the arctic tern turbine as many as polar terns do from extreme ends of the earth. The African wildebeests travel across geographically isolated regions in millions in search for grazing fields as well as water sources. Likewise, Sockeye salmon hatch in freshwater rivers and after spending years in the sea return back to the rivers for spawning. These migrations are essential for species as it helps them in changing environment and maintains the population.