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    causes of bird migration

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    This job names proximate and ultimate causes of bird migration.

    © BrainMass Inc. brainmass.com October 9, 2019, 3:29 pm ad1c9bdddf
    https://brainmass.com/biology/migration-drift-and-non-random/causes-bird-migration-5213

    Solution Preview

    Arctic Turn - bird that lives in the Arctic Circle during the summer and Antarctica in winter

    Evolutionary Causes Or Ultimate Causes -
    Cost -Long journey with high mortality. Territory given up
    Benefit -(why not just stay in one place) Going to an area where days are longer so there is more time to forage and thus more offspring can be supported. Less predation occurs due to fluctuating prey amounts. Parasites are less likely to survive in a different environment

    Proximate Causes -
    Idea, the sun is used as a compass
    - Train a bird to go east to feed at ...

    Solution Summary

    This job describes various causes of bird migration.

    $2.19