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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Cheetah mother and cub
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A day to celebrate teachers
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Everest s shadow on the Himalayas
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A wonder in winter
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Lake Bled, Slovenia
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Across the great plains of Africa
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A wild, craggy corner of the United States
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Yi Peng Festival in Chiang Mai, Thailand
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Bellissima!
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The tallest animal in the world on the longest day of the year
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Colorful cows of the reef
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Happy Mothers Day!
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Great Backyard Bird Count
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Waitangi Day in New Zealand
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Mediterranean red sea stars
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Train crossing the Tadami River in Japan
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Glacier Bay National Park and Preserve
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Mysterious prairie mounds abound
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Golden Gate Bridge, San Francisco, California
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The power of the forest
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The Great Glen
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Manatee Appreciation Day
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Oh, to sleep under the northern lights
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Three Natural Bridges, Wulong Karst, China
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Silver-studded blue butterflies
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Merry Christmas!
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Three cheers for polar bears!
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Giving Tuesday
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A wetland in Västmanland, Sweden
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Halemaumau Crater, Hawaii Volcanoes National Park
Bing Wallpaper Gallery

