Elk

A naming tangle

The word “elk” means two different animals depending on the continent:

• North American elk — Cervus canadensis, also called wapiti (a Shawnee word meaning “white rump”). The animal this entry describes.
• European elk — what Europeans call elk is what North Americans call moose (Alces alces). Same species in both ranges; different vernacular.

To avoid confusion, biologists increasingly prefer “wapiti” for the North American animal.

Massive annual antlers

Bull elk grow the largest antlers of any living deer except moose. Each year:

• Antlers begin growing in spring, encased in soft fuzzy “velvet” — actually skin with blood vessels feeding the rapidly growing bone.
• They reach full size by late summer, when the velvet dies and is rubbed off against trees.
• Antlers are used in rutting season (September–October) for displays and combat with rival males.
• They’re shed in late winter or early spring, leaving the bull antlerless until the cycle restarts.

A mature bull’s rack can span 1.2 meters and weigh 18 kg — all of it grown in 4–5 months.

The bugle

The most distinctive elk sound is the bull’s rutting bugle — a high-pitched, drawn-out call that carries kilometers across mountain valleys. Bugling serves both as a challenge to other males and as a courtship display to nearby cows. The sound is iconic in North American mountain ecosystems and a major draw for elk-watching tourism in Yellowstone, Banff, and Jackson Hole.

Population history

Elk were nearly extirpated from the eastern US by 1900 and severely reduced across their western range. Sustained reintroductions through the 20th century rebuilt populations to today’s roughly one million in North America. Modern elk thrive in places like Yellowstone, Rocky Mountain National Park, and Olympic National Park.