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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Endangered Species Day
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Over the boardwalk
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Beyond Walls for World Refugee Day
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An icy extravaganza
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It s only Wednesday
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African buffalo, Ngorongoro Crater, Tanzania
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Sea Otter Awareness Week
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A winter’s holiday ends
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Northern hawk-owl
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1934 Labor Day parade, Gastonia, North Carolina
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National Panda Day
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Amelia Earhart
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Shark Awareness Day
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What are these creatures?
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World Space Week begins
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Take me to the river
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Basking in the glow
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Wheels up in Beijing
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Whitehaven Beach, Whitsunday Island, Australia
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International Sloth Day
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Quiver trees in Namibia
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Monteverde Cloud Forest Reserve in Costa Rica
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Wedded Rocks, Japan
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Bláhver, Hveravellir, Iceland
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Fannette Island, Lake Tahoe
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Upper Geyser Basin, Yellowstone National Park
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I m here! Take a look at me!
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Monarch butterflies, Pismo Beach, California
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Colle Santa Lucia, Dolomites, Italy
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Keep your hands inside the ride at all times…
Bing Wallpaper Gallery

