"This is how to bugle, son!"
A young Elk calf listens, as the bull Elk who sired him emits a loud bugle to challenge potential rivals.
Photograph taken in Rocky Mountain National Park, near the headwaters of the Colorado River.
©2016 John J O'Leary
All Rights Reserved
This image is not available for use on websites, blogs or other media without the explicit written permission of the photographer.