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April 19, 2012
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Citizen scientists monitor yellow-bellied marmots, which emerge earlier as snow melts earlier.
Yellow-bellied marmots are emerging earlier as snow-pack in Colorado's Rocky Mountains disappears earlier when snow melts quickly in warm and early springs. Citizen scientists monitor their activities.
Credit: National Phenology Network
Images credited to the National Science Foundation, a federal agency, are in the public domain. The images were created by employees of the United States Government as part of their official duties or prepared by contractors as "works for hire" for NSF. You may freely use NSF-credited images and, at your discretion, credit NSF with a "Courtesy: National Science Foundation" notation.
Additional information about general usage can be found in Conditions.
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