Welcome back, little mountain bluebird. Although this bright fellow may be enduring the last of this year"s snow in Yellowstone National Park, his presence means winter will soon be ending. The bluebird is a symbol of happiness and a welcome sign of spring in many cultures. Soon other migratory birds will arrive in the Greater Yellowstone Ecosystem—an 18-million-acre tract that includes Grand Teton National Park and surrounding national forests. It"s the world"s largest intact ecosystem in the northern temperate zone. What exactly does that mean? Since wolves were reintroduced to Yellowstone 25 years ago, all the animal species that were first documented by European explorers can still be found here.
Hello, harbinger of spring
Today in History
More Desktop Wallpapers:
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Uncommon clouds are gathering
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Wake up, it s Darwin Day
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National Go Birding Day
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Endangered Species Act
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Sunbeams across Tartu County, Estonia
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Pearl Harbor Remembrance Day
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Digging the birds
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It s time to fall back
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Vacuum Chamber 5 at Glenn Research Center
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Redwood National and State Parks, California
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Womens History Month
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‘The mountains are calling’
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A whale of a picture
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Traffic jam on the caribou highway
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American bison, Grand Teton National Park, Wyoming
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World Penguin Day
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Last stop before leaving the solar system
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Mount Logan in Yukon, Canada
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Darwin s Arch
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Winter in the Finnish wilds
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National Pumpkin Day
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FOR FOREST by Klaus Littmann
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A picture-perfect day on Trillium
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It s Computer Science Education Week
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Embracing the cold
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Lake Peipus, Estonia
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The owl that loved football
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Black grouses lekking
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Great horned owl near Lake Tohopekaliga, Florida
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Al-Khazneh in Petra, Jordan
Bing Wallpaper Gallery

