September is prime time for aspen viewing and elk bugling in Rocky Mountain National Park, and Moraine Park Campground offers the best of both.

The elk rut has started in Rocky Mountain National Park. Reporter Ignacio Calderon pulled together an "elk 101" with common terms and fun facts.

If the federal government shuts down, national parks will close — but Colorado Governor Jared Polis has a plan to keep them open during prime elk-bugling time.

Can you still see elk bugling and the aspen show in Rocky Mountain National Park? Yes on the elk, no on the aspen. The elk rut, or mating season, is winding down.

Fitted with near-field communication (NFC), the first of its kind for RMNP, the three foot by two foot bronzed plaque depicts a bas relief of Longs Peak and Kahuna the elk bugling.

Rocky Mountain National Park officials have ended timed-entry restrictions, meaning visitors are free to enjoy this fall's elk rut at their leisure.

Come fall, it's difficult to determine if elk bugling is Robin and aspen viewing Batman or the other way around in Rocky Mountain National Park. Aspen still have a week or two to shine so until ...

Male elk have been heard bugling and photos of them with their harems in Estes Park have been proliferating on social media sites, heralding the arrival of the annual mating ritual known as the rut.

Male elk have been heard bugling and photos of them with their harems in Estes Park have been proliferating on social media sites, heralding the arrival of the annual mating ritual known as the rut.

Male elk have been heard bugling and photos of them with their harems in Estes Park have been proliferating on social media sites, heralding the arrival of the annual mating ritual known as the rut.