African penguins (Spheniscus demersus) and the similar Humboldt penguin (Spheniscus humboldti) can b
African penguins (Spheniscus demersus) and the similar Humboldt penguin (Spheniscus humboldti) can be distinguished based on their belly spots. Not meaning the two species can be distinguished (which is fairly simple to do since one lives in Africa and the other South America), but individual penguins can be distinguished. The pattern of black spots is unique for each penguin. -- source link
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