What is Darwin's finches?
{{Taxobox | name = Darwin's finches | image = Darwin's finches by Gould.jpg | image_width = 250px | image_caption = [[Large ground finch]], [[Medium ground finch]]<br/>[[Small tree finch]], [[Green warbler-finch]] | regnum = [[Animal]]ia | phylum = [[Chordata]] | classis = [[Aves]] | ordo = [[Passeriformes]] | familia = [[Thraupidae]] | subdivision_ranks = [[Genus|Genera]] | subdivision = ''[[Geospiza]]''<br /> ''[[Camarhynchus]]''<br /> ''[[Platyspiza]]''<br /> ''[[Certhidea]]''<br /> ''[[Pinaroloxias]]'' }}'''Darwin's finches''', also known as the '''Galapagos finches''', are [[finch]]es that live on the [[Galápagos Islands]]. They are not actually [[finch]]es, but they are a kind of [[passerine]] bird.<ref>{{harvnb|Grant|Grant|2008|p=3}}</ref> [[Charles Darwin]] used the finches to provide evidence for [[natural selection]]. He realized that the finches have different beaks because they are [[adapted]] to eat different kinds of food. For example, a finch with a big beak is very good at cracking open nuts, and a finch with a long beak is very good at catching insects. Darwin was able to see that the finches had a [[Common descent|common ancestor]] which is why they were so similar except for their beaks. Eventually, this led to the theory of [[evolution]]. ==Further reading== *{{Citation | last = Darwin | first = Charles | year = 1859 | title = On the Origin of Species by Means of Natural Selection, or the Preservation of Favoured Races in the Struggle for Life | url=http://darwin-online.org.uk/content/frameset?itemID=F373&viewtype=text&pageseq=1 | edition =1st | publication-place = London | publisher =John Murray}} *{{citation|last1=Grant|first1=Peter R.|last2=Grant|first2=B. Rosemary|title=How and Why Species Multiply: The Radiation of Darwin's Finches|year=2008|publisher=Princeton University Press|isbn=978-0-691-13360-7}} *{{Citation | last = Sulloway | first =Frank J. | date =Spring 1982 | title =Darwin and His Finches: The Evolution of a Legend | periodical = Journal of the History of Biology | volume =