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the douugie fresh song
Charles Darwin was influenced by his trip to the Galapagos islands.
Geographic isolation of a common ancestral species of finches
Yes, he did.
On each island of the Galapagos Islands
Galapagos Islands
he thought that some of the birds were wrens ,some were warbles,and some were Blackbirds
You can get started here: http://x-evolutionist.com/charles-darwin-described-the-problems-with-his-theory-in-his-book-origin-of-species/
The question as phrased confuses what Darwin found. He did not find one species of finch on the Galapagos Islands and different species on another set of islands. He found different species of finches on different islands within the Galapagos archipelagos. Some had larger beaks for cracking seeds and some had smaller beaks for capturing insects. Some were physically larger and others were smaller. The primary differences between the finches correlated almost perfectly with the predominant food source available to them on each individual island.
The species of finches Darwin found were so varied because they had migrated over time to islands of different vegetation, and they adapted to better suit their new environment. Over time, the finches became so different from each other that they turned into new species.
there is a myth that he found a sea monster and named it Galapagos Gruti but it is a myth
Charles Darwin first published the theory in The Origin of Species in 1859