<p>Four bison stand in snow with steam coming out of their mouths and frost on their backs.</p>
<p>Bison herd sunrise at -20°F</p>
<ul><li>Keywords: yellowstone national park; mammals; wildlife; bison; bison bison; jacob w. frank; breath; sunrise; winter; yellowstone; 20170105-jwf-1557</li></ul>
Jacob W. Frank
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