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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Wild and Scenic Rivers Act
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Citizenship Day and Constitution Day
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Why you should thank a nurse today
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Happy Independence Day!
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Spring comes to the Palouse
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Boxing Day—a shopper’s delight
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Cenote near Puerto Aventuras, Mexico
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Presidents Day
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In Sicily, history is everywhere
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International Day of Color
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Oh, to sleep under the northern lights
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Celebrating the International Day of Forests
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Sweet! It’s maple syrup season
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Honoring our veterans
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Summer winds down in the Hamptons
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World Lizard Day
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The Vestibule at Diocletian s Palace, Split, Croatia
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Silver-studded blue butterflies
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A day to celebrate teachers
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Happy Pi Day!
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Celebrating Flag Day
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National Merry-Go-Round Day
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Mandarin duck, Richmond Park, London, England
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Wilderness Act anniversary
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Astronomy Day
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Happy Panda Day!
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A century since Tut s tomb was discovered
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A tree amid the Tetons
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Midsummer in Sweden
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Lionfish off the coast of Indonesia
Bing Wallpaper Gallery

