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  • Brainly User
2015-07-02T15:39:40+05:30
Sparrow migrates because of :-

1-Meal=> If sparrows were to stay in the same tropical regions food would become of no use
Climate,Predators,Disease 
0
2015-07-02T15:39:48+05:30

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The basic reason for this is that Birds migrate to move from areas of low or decreasing resources to areas of high or increasing resources. the two basic and main factor for which they migrate is for food and nesting locations.

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