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Rocky Mountain National Parka photo of an Eastern Black Swallowtail caterpillar
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Rocky Mountain National Park
Trees in Winter
a photo of fall aspen leaves
Photo courtesy of and copyrighted by Ernie Bernard.
Aspens (Populus tremuloides) lose their leaves in winter and must grow new ones in the spring to be able to photosynthesize.
 
a photo of Englemann spruce
Photo courtesy of and copyrighted by Ernie Bernard.
An Engelmann spruce (Picea engelmannii) keeps its needles all winter to be able to photosynthesize quickly in Rocky Mountain National Park.
a photo of Abner Sprague buying a pass to Rocky Mountain National Park  

Did You Know?
Homesteader and lodge keeper Abner Sprague was the first person to pay to enter Rocky Mountain National Park. His fee was $3.

Last Updated: August 29, 2007 at 12:50 EST