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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Nuwara Eliya, Sri Lanka
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World Theatre Day
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Porcupine
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A towering view of the Pale Mountains
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Superbloom in Carrizo Plain National Monument, California
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Winter in the Wild West
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Dreaming of the Tyrrhenian Sea
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World Turtle Day
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International Lighthouse Weekend
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Birds of the Drömling
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Celebrating Minnesota’s statehood
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Village of Oia in Santorini, Greece
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Midwinter freeze
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Bridge over the River Tara
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National Frog Month
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Engineering an artificial harbor in Normandy
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Monarch butterflies, Pismo Beach, California
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A species worth defending
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World Sea Turtle Day
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Native American Heritage Month
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Everest s shadow on the Himalayas
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Horseshoe Bend, Arizona
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Celebrating the first day of spring
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Lake Bled, Slovenia
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The Wave at Coyote Buttes
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Pasadena Chalk Festival supports local arts education
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Assembling the Smithsonian
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Saint Andrews Day
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The Guggenheim turns 60
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Bournemouth beach huts
Bing Wallpaper Gallery

