On nearly all Wadden Sea islands in the Netherlands, hedgehogs do not occur naturally. However, during the twentieth century, they were introduced on most isles. Texel and Langeoog are the only two islands where the species is said to have lived already in the early twentieth century. Were they introduced there by humans before 1900? Or did they live on Texel already when it still was a part of the continent during the ice age? We are not sure yet.
Today, hedgehogs live mainly in the sand dunes of western Texel; and in the hilly center. They are very rare in eastern Texel, which is mainly low-lying farmland and marshes. However, there is tree and shrub cover near some farms. This might attract hedgehogs, but does not seem to do so. Are there really no hedgehogs there? Or are species distribution maps influenced by naturalists, who prefer looking for animals in nature reserves to trying to find them in seemingly less attractive surroundings?
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