The 13 species of finches in the Galápagos Islands evolved from a common ancestor that arrived from the mainland of South America. This adaptive radiation occurred as the finches colonized various islands, each facing different environmental conditions and food sources. Over time, natural selection favored specific traits, such as beak size and shape, allowing these finches to exploit different niches, leading to the development of distinct species. This process illustrates the principles of evolution and speciation in isolated ecosystems.
That the finches were similar to the ones on the mainland, but had adapted to the island environment.
The ancestor or ancestors of the finches on the Galapagos Islands arrived there most likely by being carried by the wind from the mainland of South America or Central America. These ancestors were of one species which evolved over time into 13 different species endemic to the Galapagos.
That the finches were similar to the ones on the mainland, but had adapted to the island environment.
The shapes of their beaks were different from mainland finches and they worked better to get the food they needed.
They could no longer reproduce with the finches from South America. A+. Tony B.
the finches originally came from south American main land
The Galapagos finches and the Galapagos tortoises.
Galapagos finches
Charles Darwin discover the finches in Galapagos in 1831. He noticed that the finches beaks were different compared to the finch's in Ecuador.
Darwin was puzzled about the many adaptations of the finches on the Galapagos Islands
The Galapagos Islands.
The finches that Peter and Rosemary Grant chose to study the Finches in the Galapagos because they are hybrid.