What are the two reasons for migration of animals?

Some animals travel relatively short distances to find food or more favorable living or breeding conditions. Most animals that migrate do so to find food or more livable conditions. Some animals migrate to breed. The Atlantic Salmon begins its life in a river and migrates downstream to the ocean.

What are two reasons animals migrate?

Animal migration is the large-scale movement of a species from one place to another. Most species migrate during specific seasons, in search of food or water, or for mating reasons.

What are the two reasons of migration of birds?

Answer: Birds migrate to move from areas of low or decreasing resources to areas of high or increasing resources. The two primary resources being sought are food and nesting locations. … As winter approaches and the availability of insects and other food drops, the birds move south again.

What is an example of animal migration?

These are all examples of migratory animals. Birds, mammals, reptiles, amphibians, fish, and even insects migrate. Deer, elk, moose, bighorn sheep, and pronghorn are examples of Idaho mammals that migrate. Gopher snakes, rattlesnakes, and other snakes migrate to den sites in the fall.

What do animals depend on to migrate?

Animals use a variety of cues to determine when it is time to migrate. Some migrations are triggered by external cues, like changing daylight hours or temperature. … Some animals rely on the position of the sun, moon, or stars, some use smell, and still others use the magnetic field of the Earth to guide them.

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What are the advantages of bird migration?

Importance of migratory birds

Migratory birds help in dispersal of seeds, leading to maintenance of biodiversity along their routes. Ducks can transport fish eggs in their guts to new water bodies. The droppings of birds, also known as guano, are rich in nitrogen and act as organic fertilizers.

Which animal makes the longest migration?

Caribou have the longest terrestrial migration, but there is more to the migration story. A grey wolf from Mongolia has been documented as having traveled over 4,500 miles in a year. Caribou are often credited with the longest terrestrial migrations in the world, though without much scientific support.

Population movement