International Day for Biological Diversity May 22, 2022

International Day for Biological Diversity

On this day when we honor all the world"s species and their interdependence, the Burchell"s zebra and the cattle egret give us a great example of commensalism, a type of symbiosis in which one species gets a benefit without helping or hurting the other species: As the zebra grazes in the grass, it stirs up insects for the egret to eat.

© Richard Du Toit/Minden Pictures

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Today in History

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