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.
International Day for Biological Diversity
Today in History
More Desktop Wallpapers:
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A hermitage with a view
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National Park Week: Haleakalā National Park, Hawaii
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Train crossing the Tadami River in Japan
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Fall for Chile
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Old Fortress, Corfu, Greece
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Blackbird in Essex, England
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Galeries Lafayette, Paris
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The roots of invention
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Point Reyes National Seashore
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Spring comes to the Palouse
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Glowworm caves in Australia
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The island fox’s incredible comeback
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World Reef Awareness Day
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World of WearableArt Awards
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On a Healing Field for Veterans Day
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The dry days of winter in Etosha
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Venture into a prehistoric gallery of art
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Instant romance
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What kind of bird laid these eggs?
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A showcase for future fame
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Let s face it: It s World Emoji Day
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Birds of a feather
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In the footsteps of Leopold Bloom
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Christmas comes to New York City
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Castle Day in Japan
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A wassailing we go
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Cloudy with a chance of enlightenment
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Bellissima!
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Day of the Dead
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Where the bearded reedling sings