SCIENCE
ZOOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Scarcity of food in the regions to which they have migrated
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Hunting season commencing
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Breeding instnet with change in climate,and they breed only in their original habitat
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Weather becoming too hot in the regions
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Detailed explanation-1: -The primary motivation for migration appears to be food; for example, some hummingbirds choose not to migrate if fed through the winter. In addition, the longer days of the northern summer provide extended time for breeding birds to feed their young.
Detailed explanation-2: -List three possible explanations for how migratory birds travel to the same place year after year. season approaches and the availability of insects and other food drops., valleys and mountains to return to their area. They also use the sun to know their exact location and time of the year.
Detailed explanation-3: -Migratory birds fly to far away areas every year during a particular time because of climatic changes. They fly for laying eggs as the weather in their natural habitat becomes very cold and inhospitable.
Detailed explanation-4: -Migratory birds fly to faraway places because of climatic changes. Bird migration is the regular seasonal movement, often north and south along a flyway for breeding, food availability, habitat, and weather. For example-Syberian cranes migrate from Russia and Siberia to India in winters.