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Finches and Tortoises have been observed to be different on different Islands/niches. We havent observed that change, only noted and theorised their differences and why they may have occured ....

Black pepered moths and white pepered moths are still peppered moths. Natural selection is occuring there no doubt, but evolution into separate species takes far longer. Think Kea-Kaka, Takahe-Pukeko

evolution takes place over hundreds of thousands of years minimum. The predators that were wiped out (wolves and bears) were only lost in the last few hundred years.Before that they co existed for...