Question: What is the scientific reason behind birds migration for Class 8?

Bird migration is the regular seasonal movement, often north and south along a flyway, between breeding and wintering grounds. Many species of bird migrate. Migration carries high costs in predation and mortality, including from hunting by humans, and is driven primarily by availability of food.

What is scientific reason behind birds migration?

Answer:THE SCIENTIFIC REASON BEHIND MIGRATION OF BIRDS ARE THAT THEY CANNOT CHANGE THEIR TEMPERATURE ALONG WITH OUTSIDE TEMPERATURE AND WITH THE CHANGE IN OUTSIDE TEMPERATURE, THEIR BODY TEMPERATURE FLUCTUATE. HENCE , TO PROTECT THEMSELVES FROM SUCH HARSH SUMMER OR WINTER CONDITIONS, THEY GO FOR MIGRATION.

What is migration of birds for Class 8?

Bird migration is the natural seasonal movement, often south and north along a flyway, in between the breeding grounds and wintering grounds. Migratory birds fly several kilometers in search of the best environmental specifications and habitats for food, breeding and raising their young ones.

What is migration and explain the causes of bird migration?

Other factors, viz., scarcity of food, shortening of daylight and increase of cold are believed to stimulate migration. Migration in birds depends upon two important factors— stimulus and guidance. Scarcity of food and fall of daylight are believed to produce endocrinal changes which initiate bird migration.

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What is a benefit of bird migration?

Migratory birds provide ecosystem benefits that include pest control, pollination of plants and serve as food sources for other wildlife. They are also a source of recreation for millions of bird watchers and enthusiasts who provide food and design backyard habitats to attract a variety of species throughout the year.

What is migration in science?

Migration is the seasonal movement of animals from one habitat to another in search of food, better conditions, or reproductive needs.

What is the life cycle of birds?

When a fledgling or juvenile has finished growing it becomes a mature or adult bird. An adult bird attracts a mate, builds a nest and raises young to start the cycle all over again. Some birds migrate or travel long distances as part of their life cycle. Other birds stay in one area throughout the seasons.

What is migration short answer?

Migration is the process or act of migrating, i.e. the movement from one region or place of habitat to another. … It is when an individual or a group of animals move from their habitat to the new habitat.

What are the types of bird migration?

Migration of Birds- An amazing event

  • Latitudinal.
  • Longitudinal.
  • Vertical or Altitudinal.
  • Partial.
  • Total.
  • Vagrant or irregular.
  • Seasonal.
Population movement