• 8 years ago
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Bird migration takes place each and every season and the moment when birds move from colder climates to warmer, and in between breeding grounds. Not all bird species migrate, but many do and when they do, they will often fly along the same path every year. Migration can possibly be costly to the bird population, taking high tolls in mortality and predation. Predation is typical, particularly in the northern courses in which birds are directed by natural obstacles into particular flyways.

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