The variation in their beaks that allowed the finches to utilize a great variety of foods. Darwin saw this and though that these birds were different species and did not know better until he returned to England. There it was revealed to him that the birds were all finches and that lead to evolutionary concepts.
I learned this in Biology class. It helps us to understand evolution today because (for example) if you find a species of Flightless Birds (let's say an ostrich), chances are that somewhere on the opposite hemisphere there is a different species of flightless bird as well. (Meaning it could be an emu, kiwi or a penguin).
this i how it happened: some finches flew to different islands of the Galapagos and got adapted to that island. When they went back to the first island they could not breed anymore. This means that now it is considered a different species. hope it helps, good luck!
Actually he didn't make a statement on this matter. The super myth is that Darwin's theory of evolution crystallized when he saw the different beaks on finches in the Galapagos Island based on their beak shapes. In truth he didn't pay much attention to them and mis-labeled many of his samples of the birds. His theory came from years of studies of creatures from small invertebrates, to plankton, to insects and then the collection of large extinct mammal fossils. It was paired with a knowledge of geology and how the earth has evolved as an environment upon which every living thing has existed upon. Later scientists drew the conclusions about the finches.
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Since Darwin found many species of plants he found many species of finches. Those species, just like the warbler finch, were found on the Galapagos Islands.
finches on the Galapagos islands, darwin noticed that on different island each beak of the finch was different depending on the food avalible on the different islands so darwin presumed that as each finch moved to these islands their beaks changed
Geographical Distribution of living species supports evolution because, as species are split up along the planet, they endure changes which better help they adapt to their surroundings. An example of this is with the Finches in Darwin's studies on the Galapagos islands. They all came from the same breed of finch but branched off with different characteristics to survive on the different islands that they were surviving on.
Genetic isolation. This occurs when members of species that also occur on mainland areas begin to evolve slightly different habits and appearances.
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The statement that Charles Darwin came to realize that organisms of the same species are identical is false. Charles Darwin observing the finch population in the Galapagos discovery quite the opposite was true. The finch has branch off with many adaptation to suit the changes in the different environments.
Since Darwin found many species of plants he found many species of finches. Those species, just like the warbler finch, were found on the Galapagos Islands.
Darwin was the man who went to the Ga'lapagous Islands and studied the finch's beaks and how they all differd even though they were all apart of the same species.
Darwin used the wide variation of beaks to support his theory of evolution. He speculated that all the different finches had descended from one species and were not different species.
When Darwin traviled from island to island and saw that each one had its own specialized finch... there are 13 types to be exact ...this suggested to him that animals evolved
the galapagoes islands
Darwin studied the beak of a finch to see how it adapted to the food it ate. hope it helps, good luck!! ;)
The Galapagos Islands.
Darwin discovered that the finches were once the same species. Due to isolation, each island produced variations of the original finch species.
Darwin noticed that every island had its own kind of finch
All known species of Darwin's Finches are found on the Galápagos islands. With the exception of one, the Cocos Finch, which is found on the Cocos Island. Darwin's finches are not actually true finches. Darwin knew they weren't finches, but an ornithologist called Percy Lowe, later in 1936 incorrectly called them "Darwin's Finches" in a book, a term which unfortunately stuck.