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Dutch barnacle geese have more active immune system than same species in the North


PhysOrg

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Bird migration is an impressive phenomenon, but why birds often travel huge distances to and from their breeding grounds in the far North is still very unclear. Suggestions include that the birds profit from longer daylight hours, or that there are fewer predators. Researchers from the Dutch center for bird migration and demographics, have discovered a new explanation.pGo27JbzMVk

 

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