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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Fiesta at Siesta
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Frog Month
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Glen Brittle, Isle of Skye, Scotland
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National Llama Day
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World Space Week
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Great cormorants
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The globe skimmers return
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Methow Valley, North Cascades, Washington
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An underwater rainbow
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‘Hello’ from zero degrees longitude
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International Day for Biodiversity
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Listening to the sea
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Cenote near Puerto Aventuras, Mexico
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St. Patrick’s Day in Ireland
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High tide at the walled city
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Navajo Bridge in Marble Canyon
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World Teachers Day
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The otherworldly red river
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Take the plunge into 2021
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Waimea Canyon and Waipoo Falls, Kauai, Hawaii
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Basking in the glow
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The Crown of the Continent
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When an ideal microclimate gives you lemons…
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Happy Father s Day
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Celebrating Native American Heritage Day
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At the shore of an inland sea
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Vacuum Chamber 5 at Glenn Research Center
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Northern cardinal in winterberry bush
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Have a ‘beary’ good Earth Day
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It’s NASA’s 60th birthday
Bing Wallpaper Gallery

