Cold Feeding Challenges

Fluffy Chickadee

     For the past couple weeks, Albertans have been struggling with a prolonged cold snap. Our outside temperatures have rarely been above -20 degrees and most often been around -30 or colder. Wind chill factor has often felt another 10 degrees of cold. Mother Nature has also blessed us with about a foot or more snow to add to our miseries. Most of us have warm homes or offices to live and work in, but many others are challenged to be working long hours outside. Vehicles and equipment never operate efficiently when it is so cold.

     Even as we struggle in our chilly lives, wildlife also work hard to maintain life and warmth. Each of our winter habitants has various strategies to find food and stay warm during the roughly six months of dark chill. I drove out to a couple of parks in the area to see how some of them are making out.

     Elk Island National Park is a great place to find ungulates during winter. Whether it is snowing or sunny, all have to find food. I selfishly enjoy stormy days for photography even though it is more challenging for the wildlife.

Browsing Moose in Snowstorm

     Moose are no doubt very well adapted to winter weather. Long powerful legs easily propel them through deep snow and over hidden deadfalls. They are very tall and have a long reach enabling them to stretch out for tall, tender willow and aspen twigs. Moose are constantly on the move nipping frozen branches before laying down to chew their cuds. Long dark, coarse guard hairs help shed water and prevent fine inner hair getting wet. Moose have no natural predators in Elk Island Park at this time as the wolves that were here a few years ago were shot by neighbouring ranchers. Bull moose have dropped their antlers by now and will begin growing new ones soon. The bane of moose is ticks. Ticks will be infesting them and we will start to notice bald white patches where hair has been rubbed off to try to relieve itching. Sometimes, hundreds and thousands of ticks will infest one moose and can eventually kill it. Starvation, blood loss, and exposure can be causes of moose mortality due to ticks.

Plains Bison Feeding in Snowstorm

     Bison, often called buffalo, live and are very well adapted to life on the plains and forest of the park. Plains bison use their massive heads and cloven hooves to shovel snow off grassy graze. The front half of their bodies are covered by long, dark brown shaggy fur coats. When the wind howls across open plains they face into the storm for protection. When they lie down to chew their cuds, snow can completely cover their shaggy body providing additional insulation and camouflage. Bison eat only grass and are bothered by no predators in this park. Bison are prolific breeders so Elk Island Park managers send excess animals to other places that want to introduce healthy and pure bison to areas that they have been extirpated from over the past 150 years. Bison from EINP have been sent to Banff and Grasslands National Parks, Russia, and many different states. EINP is home to purebred and disease-free herds of both plains and woodland bison. The two distinct species are kept separated by a fence and the Yellowhead highway.

Feeding is a Challenge

     Wapiti, or more commonly called elk are common in EINP but can be more challenging to find due to their naturally skittish nature. They are browsers and grazers so there is plenty of choice feed for elk. They do have to paw deep snow from grassy graze. Elk don’t seem to be pestered by ticks and since there are no wolves here, they have no natural predators within the fenced park. Elk will drop their antlers within the next month or so and begin to grow a new set immediately after. The dropped antlers of all deer family members provide nutrient-rich food for rodents throughout the coming year.

Bull Elk Bedded Down in Snowstorm

     In East Edmonton, along the North Saskatchewan River lies Hermitage Park. Within this municipal park, bird watchers have placed several feeders filled with seeds and suet to assist many of the winter-hardy birds through this challenging season. Chickadees, Dark-eyed Juncos, purple finches and Downey woodpeckers are busy collecting seedy meals. Magpies and blue jays are also aggressively choosing favourite seeds. Several Mallard ducks also wander beneath the feeders collecting dropped seeds. The main struggle for the small songbirds is to find safe roosts where they can huddle together out of the wind and snow. They will use woodpecker holes, downed logs or hide in protective branches of evergreen trees. They do have to watch for hungry weasels or house cats and predatory birds such as hawks and owls. If they cannot gather enough food during the day to fuel their small bodies, they will die.

Chilly Blue Jay

     One of the amazing sights I watch in this park happens in one of the storm-drain lakes. For some reason, there are three or four small openings in the ice near the shoreline. There must be small springs or inflows here that attract tiny fish called sticklebacks. Today, several magpies are fishing together with a lone mallard female bobbing in the largest opening. The magpies gather three or four fish in their beaks and fly off to hidden stashes or to eat in peace.

Ice Fishing Magpies

     Some of the birds could fly south to warmer climes for winter but others are confident enough to stay and make a living in this wintery region. Mammals have no choice to migrate from this area. They are all descendants that have survived here since the ice age about 12000 years ago. It gives me great pleasure to be a casual observer of how Mother Nature provides for Her creatures.

Who Landed here?

Robert Scriba