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Tundra - MSN Encarta |
 | | The Arctic tundra stretches in an unbroken strip across the northern latitudes of Eurasia and North America and encompasses Greenland, Iceland, the islands of the Canadian archipelago, the Pribilof Islands, Nunivak, St Matthew and St Lawrence islands, Wrangel Island, the New Siberian Islands, Severnaya Zemlya, Novaya Zemlya, Franz Josef Land, Svalbard, and numerous smaller islands. |
 | | Many migratory birds breed on the tundra during the brief summer, feeding on the flush of seeds and berries and/or the rapidly emerging populations of mosquitoes, fl flies, blow flies, springtails, weevils, beetles, and spiders. |
 | | Alpine tundra supports mountain goats, bighorn sheep, ibex, chamois, foxes, wildcats, pikas, marmots, ground squirrels, rabbits, voles, many summer-visiting birds, and the resident ptarmigan, a high-altitude version of the red or willow grouse that feeds mainly on willow buds and the succulent parts of other dwarf shrubs. |
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