gI've two reasons for the migration of birds
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Birds migrate when food is scarce. ... When food dwindles in the fall, they flock back to warmer conditions where food is more abundant. Birds normally look for adequate shelter, safety, food and proper breeding grounds when nurturing young.
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1. Birds migrate when food is scarce. Birds that stay in a single area consume much of the food sources in a particular area, forcing them to flock north to places where there is more food.
2. Birds migrate when food is scarce. Birds that stay in a single area consume much of the food sources in a particular area, forcing them to flock north to places where there is more food.
3. Adults also move to other places to escape diseases that may spread within colonies. Moving to another spot lessens the chance of spreading illnesses to newborn chicks.
2. Birds migrate when food is scarce. Birds that stay in a single area consume much of the food sources in a particular area, forcing them to flock north to places where there is more food.
3. Adults also move to other places to escape diseases that may spread within colonies. Moving to another spot lessens the chance of spreading illnesses to newborn chicks.
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