Keyword: migrations
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!Monarch Reserve!
Millions of monarch butterflies (Danaus plexippus) roost on the Chincua Mountain near Angangueo, Mexico. This is one of five wintering roosts for monarchs, where the cool mountain climate slows their metabolism enough for them to overwinter before migrating back northward in the spring. Logging threatens this spectacle–Already one of the five sites is no longer used by the butterflies due to the forest being cleared.
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ANI082-000116
Millions of monarch butterflies (Danaus plexippus) roost on the Chincua Mountain near Angangueo, Mexico. This is one of five wintering roosts for monarchs, where the cool mountain climate slows their metabolism enough for them to overwinter before migrating back northward in the spring. Logging threatens this spectacle–Already one of the five sites is no longer used by the butterflies due to the forest being cleared.
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A pronghorn antelope sneaks under a barbed wire fence.
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ANI082-00191
A pronghorn antelope, Antilocapra americana, crawls under a fence.
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A pronghorn antelope, Antilocapra americana, crossing under a fence near Medicine Hat, Alberta, Canada.
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A pronghorn antelope, Antilocapra americana, crossing under a fence near Medicine Hat, Alberta, Canada.
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A mountain goat (Oreamnos americanus) stretches to reach a mineral lick in the Walton area of Glacier National Park in Montana. Wonder how this one performed such a death-defying feat? Very carefully. Mountain goats make their living by taking each step very seriously. Using splayed, rubbery hooves that grip rock surfaces, this female started by placing all four feet on the tiny ledge where her back feet are shown in the photo. She then pushed out and wedged into the crevice using her front hooves to bridge the gap, licking any salt on the rocks around her. To get out, she reversed the procedure, again placing all four feet on the same little ledge, turning around slowly until she could exit, uphill and to the left.
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ANI082-00188
A herd of bison (Bison bison) running across the prairie on the Triple U Bison Ranch near Fort Pierre, South Dakota. This ranch has about 2,000 head of bison on over 50,000 acres.
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A herd of bison (Bison bison) running across the prairie on the Triple U Bison Ranch near Fort Pierre, South Dakota. This ranch has about 2,000 head of bison on over 50,000 acres.
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The opening spread for “Great Migrations” from the November, 2010 issue of National Geographic magazine, featuring Joel Sartore’s photograph of bison in South Dakota.
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The US-Mexico border wall splits countries and habitat. Animals like this bobcat (Lynx rufus) or its cousin the ocelot, would normally cross the border to hunt or mate. Photograph by Joel Sartore with Mitch Sternberg, Jennifer Lowry, and Naghma Malik, all U.S. Fish and Wildlife Services.
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ANI082-00184
An eastern bluebird (Sialia sialis) near Pleasantdale, Nebraska.
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A male Baltimore oriole (Icterus galbula) in Raymond, Nebraska.
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Caribou in the Arctic National Wildlife Refuge, Alaska.
