Swallow: example of migratory bird
Introduction (reasons for animal migration)
Several species of birds, mammals, insects and fish migrate from one location to another in search of favorable environmental conditions such as mild climate and abundant food. Another reason that causes animals to migrate is reproduction.
To migrate, animals use an efficient guidance mechanism. Birds and fish can orient themselves with great precision.
The birds have a kind of internal compass, which allows orientation with the ground. They also have a kind of internal clock that acts as a sextant (navigational instrument that uses the stars and the horizon as location references).
Examples of migratory animals:
- wild goose
- Dark fool
- Arctic tern
- Gray Whale
- Caribou (North American Tundra Deer Species)
- Northern Elephant Seal
- Flat-head shark
- Tuna fish
- Some bird species travel intercontinental migratory routes (between 1,000 and 8,000 km or more) each year.
- Swallows, in their annual migration process, manage to fly for several days without stopping.
- The animal that travels the farthest distance during migration is the bird known as the dark fool. Every year he flies about sixty thousand kilometers.
Wildebeest migration in Africa: looking for regions with water and favorable conditions for life and reproduction.