TRAVEL
Great Canadian RIVERS 
History 
Ecosystem 
Culture 
Recreation 
Economy 

 
BowRiverEcosystem

Emerald green waters
Silt and sunlight combine to change brown waters into a remarkable emerald green at the headwaters of the Bow River.

Elk: Giant Deer of Banff National Park
On a bright spring morning in the Bow Valley, just outside of Banff, the clues are everywhere. Dark chew marks scar the trunks of aspen trees. Pawing hooves have rubbed the snow away, and left their tracks in nearby mud. A few hairs here, some telltale droppings there — all are evidence that there are elk nearby.

Stay at least 50 metres away (elk hooves can be sharp!), but have your camera ready.

Big, brown, white-rumped and stubby-tailed, elk are the second largest deer in Banff National Park (next to the mighty moose). Of all large animals, including other deer — caribou, mule deer, white-tailed deer — they are the most numerous. They are also the Park's main plant eaters, and the main prey of predators such as wolves.

Sometimes known as "wapiti" — a Shawnee word for "white rump" — the elk of the Bow Valley are both grazers and browsers. A steady diet of grasses, plants and leaves fattens them up for the fall mating season, while a woody ration of dried twigs and bark sustains them through the winter.


The Rocky Mountain Whitefish

While it may be the high-profile latecomers — the brown and rainbow trout — that attract sport fishers to the Bow, experienced anglers know that plucky mountain whitefish, the river's long-time residents, can also bend a rod and fight a line.

Unlike the trout, which are an introduced species, mountain whitefish are native to the Bow, and are the most abundant sport fish in the river. Spawning throughout its upper half, the fish thrive on cold, clear water pouring from the mountain glaciers. Reaching an average size of 50 centimetres and 1.5 kilograms, with a grayish blue back and a dull white belly, the mountain whitefish has a small, toothless mouth. It is this delicate, hard-to-hook mouth that provides an exciting angling challenge.

Barking and Bugling: Elk can be surprisingly noisy, barking to warn of danger, or maintaining two-way contact between cows and calves with squeals, chirps and mews. The whistling "bugle" of a mature bull in breeding season attracts cows to his harem and serves notice of his size and prowess to other males.

Elk cows and bulls meet only during the fall mating season. In early summer, cows give birth to single offspring, closely guarding their well-camouflaged spotted calves in tall grass and thickets. Within a few weeks, cows, calves and young bulls join together in a summer herd, while mature bulls feed alone, or in small bachelor groups.

An important part of the Park food chain, elk are hunted by cougars, wolves and bears.

Cars and trains also play a part in elk mortality, with several dozen dying each year from human intervention. In recent years, around the town of Banff, elk have become drawn to urban habitats, endangering both themselves and those who underestimate their wildness.

 



Animal Alley: Preserving Wildlife Corridors
Searching for food, looking for mates, seeking a place to nest or rest — the animals of the Bow Valley depend on protected routes that allow them to move safely between lowland and mountain habitats. As railways, highways, and urban development have closed in on the lands of the Bow River Basin, government and National Park officials have recognized the need to restrict development and limit human access in narrow — but crucial — wildlife corridors.

Large carnivores such as bears, cougars, and wolves need a well-forested travel route of at least 250 metres in width, covering the shortest possible distance between types of habitat. Smaller animals reap the benefits of a bypass free of human threat. Three well-defined wildlife corridors around the town of Banff help to keep elk and coyotes from becoming dangerously tolerant of people.