Q. 523.8( 11 Votes )
What is meant by the migration of birds? why do birds migrate?
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. BIrds also migrate for favourable weather for their survival and breeding.
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What is meant by the migration of birds? why do birds migrate?Lakhmir Singh & Manjit Kaur - Science
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Migratory birds fly to far away areas during a particular time of a year. Which of the following conditions present in their habitat during that time are responsible for this behaviour?
(i) Unavailability of food.
(ii) Extreme weather conditions.
(iii) Over crowding.
(iv) Lack of nesting areas.NCERT - Science Exemplar
Migratory birds are also found in India, one of them visits India during winter every year. Give its name.All in One - Science
Solution in brief:
(a) Why should we conserve biodiversity?
(b) Protected forests are also not completely safe for wild animals. Why?
(c) Some tribals depend on the jungle. How?
(d) What are the causes and consequences of deforestation?
(e) What is Red Data Book?
(f) What do you understand by the term migration?NCERT - Science