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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Northern coast of Colombia
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Southern gemsbok in the savannah, Botswana
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The rainbow connection
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A notorious gunfight that was incorrectly named
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East River crossing
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Patriot Day
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Wyoming celebrates its statehood
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Anniversary of the British Museum
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International Geodiversity Day
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Arbor Day
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Ring of Brodgar, Orkney, Scotland
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Redwood National and State Parks, California
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What s going on in this sky?
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Protect your neck
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Have a ‘beary’ good Earth Day
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Feature Attraction: 85 years at the drive-in
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Dyavolski Most
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International Surfing Day
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A yearly sign that spring has sprung
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Meet our fuzzy Earth Day mascot
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Mount Field National Park, Tasmania, Australia
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Happy Pi Day!
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Poinsettia Day
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Labor Day
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Heron lies the Salton Sea
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World Rainforest Day
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Winter solstice
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Independence Day of the Bahamas
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New Years Eve in Rio de Janeiro, Brazil
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National Park Week begins
Bing Wallpaper Gallery

