Free images results:
 

Elk pictures, stock photos and images

 
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Young elk Stock Photos
Author: Kovalvs
 
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Also, here are some commercial RF-licensed images that match your search criteria:  
Bull Elk Royalty Free Stock Photography
Author: Omegamic
Bull Elk Royalty Free Stock Images
Author: Jruffa
Elk Royalty Free Stock Photo
Elk
Author: Bigtexphoto