In 1419, a Portuguese settler reportedly released a mother rabbit and her litter on Porto Santo; centuries later, Darwin found rabbits about half the weight of mainland ones

In 1419, Portuguese explorers brought rabbits to Porto Santo island, leading to their rapid population growth and serious harm to local forests. Darwin later noted them as an example of evolution, but subsequent studies revealed them as a natural subspecies, which lessened their importance in the discourse on evolutionary change.
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