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Originally Posted by Shane
I unfortunately am not well educated enough on the interbreeding of animals to comment Jeff, nor do I feel like reading bias reports (both ways). So I guess I'll have to bow out.
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You don't need to bow out, just search google for darwin finches interbreed. Here are some sites that may meet your "unbiased" criteria:
http://www.doc.ic.ac.uk/~kpt/terraqu...n/finches.html
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Similar adaptations eventually led to the 13 species now counted as Galápagos finches (though Steadman points out that even this taxonomic partition is tentative, as several of these finch species can interbreed.)
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http://www.talkorigins.org/faqs/wells/finches.html
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He then says, "Peter Grant acknowledged that if species were strictly defined by inability to interbreed then 'we would recognize only two species of Darwin's finch on Daphne', instead of the usual four" (p. 170).
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http://www.carlzimmer.com/articles/2...002_Finch.html
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The two species on Daphne Major can and sometimes do interbreed, and their hybrids--far from being mulelike reproductive dead ends--are a source of fresh genetic variability.
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http://www.pbs.org/safarchive/5_cool...2_asklynn.html
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Question We have been studying natural selection and how it has led to the development of several subspecies of finches on each island. Do the birds remain on their respective island or do they island hop? If so, can they interbreed with the other finches? (Kenneth Horvath, Middle School Teacher)
Answer Finches sometimes travel between islands when the islands are very close together - they are not strong fliers however, and don't go long distances. Finches can interbreed - or hybridize - and do so on several of the islands where there are many finch species living together.
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I'm not a biologist, nor am I an expert on interbreeding of finches (either). I simply try to do research before I make a statement.
-- Jeff