As Hawaiian birds go extinct from disease, Darwin's Finches on Galapagos develop immunity to disease
source: http://scienceblogs.com/grrlscientist/2010/01/darwins_finches_develop_immuni.php
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Island species evolve in the absence of most parasites and therefore lack the ability to mount an effective immune response to them. This has caused the extinction of many island bird species. But a new study shows that when Galapagos Finches are exposed to two alien parasites, their immune systems are activated, raising hopes that they can defeat the parasites and avoid extinction.
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