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Posts Tagged ‘polar bear alert program’

Churchill Polar Bear Alert Program protects both bears and humans

by Bob Windsor, Manitoba Conservation

Polar bears that get too close are often housed before being relocated. Photo courtesy of Bob Wendt.

Polar bears that get too close are often housed before being relocated. Photo courtesy of Bob Wendt.

This story originally appeared in Fur Harvester Magazine and is reprinted here courtesy of author Bob Windsor.

Churchill Manitoba is known as the Polar Bear Capital of the World, and rightfully so.  Manitoba is home to some of the approximately 1,000 polar bears of the Western Hudson Bay sub-population, and people from all corners of the world flock to Churchill for an opportunity to see the great white bears.

Churchill is built on the bear’s natural migration path, and as a result, it’s not uncommon to see polar bears in the community or skirting along the nearby Hudson Bay Coast. The people of Churchill have learned to co-exist with the bears and have had success in doing it to a degree not found anywhere else in the world.

But it wasn’t always this way. In the late 1960s, the number of bears waiting for Hudson Bay to freeze around Churchill in the fall was as high as 80, and up to 40 bears at a time could be seen in the local waste disposal grounds.

At that time, polar bears posing a threat to human safety or personal property were generally shot. In 1963, 1966 and 1967 there were serious human-bear confrontations in and around the community, and in 1968 there was a fatal attack on a small boy. This led to calls for a program to better manage polar bears in this area.

Three tranquilized polar bears being relocated via helicopter, 70 km north of Churchill.

Three tranquilized polar bears being relocated via helicopter, 70 km north of Churchill.

In 1969, the Polar Bear Control Program was created. The program had three main objectives: to protect human life, to protect personal property from damage by polar bears and to ensure polar bears were not unduly harassed or killed.

During the 1970s there continued to be human-bear encounters, although none were fatal.  Persistent and aggressive bears had to be euthanized for the protection of the people, as there was no other way to handle bears that consistently returned to town. An average of 15 polar bears were destroyed each year in the area.

In 1976, 24 problem polar bears were relocated by DC3 airplane from Churchill to the Kaskattama River area, close to the Manitoba-Ontario border on Hudson Bay. This endeavor was very expensive, and some of the bears returned quickly and had to be destroyed.

It was decided that a holding facility for polar bears would moderate the need to euthanize bears. In 1979, construction started on the facility, which was designed to hold 16 single bears and four family groups. The holding pens are built of concrete bricks with steel bar doors and ceilings.

While the facility was under construction, the Polar Bear Alert Program was established in 1980. The priorities of this program include:

  • protecting human life from polar bears
  • protecting polar bears from harassment or the need to be euthanized
  • minimizing damage to property from polar bears
  • minimizing the potential of food conditioning and/or human habituation of polar bears
  • ensuring the safety of Manitoba Conservation and Water Stewardship staff working with the Polar Bear Alert Program

The Churchill area was divided into three control zones: the living/working area in the community (Zone 1), the inhabited perimeter area (Zone 2) and the remote area (Zone 3).  The level of tolerance for the presence of polar bears is lowest in Zone 1, where all bears are immediately removed.

In 1982, the Polar Bear Holding Facility was put into use and it has held over 2,000 bears to date. Most bears captured are housed at the Polar Bear Holding Facility. The facility was upgraded in 2006 and currently has 28 holding pens, five of which have air conditioning for warm weather use. The amount of time each bear spends in the facility varies, and depends on the amount of space available and the location and frequency of capture.

Bears captured in Zone 1 are held for a minimum of 30 days, with the exception of family groups that are relocated as soon as possible. This 30-day rule was to lessen the chance of a polar bear returning to Zone 1, and also prevents the bears from having the opportunity to become conditioned to human food sources.

The bears are provided with water or snow, but are not fed, as polar bears do not normally feed until they are able to hunt for seals on the frozen Hudson Bay, and survive on the fat stores from the previous season. Also, feeding the bears could condition them to associate man with food, which could lead to the bears returning to Churchill in future.

Today’s Polar Bear Alert Program is staffed with two natural resource officers and three resource management technicians with additional staff during the peak season. The program involves public education, minimizing bear attractants and removing bears from a defined area in and around the community.

Staff monitors a 24-hour emergency bear line. Anyone seeing a bear in or near the community can call (204) 675-BEAR and staff will respond. It is not uncommon during the peak period from mid-October to mid-November for staff to be called out five or six times a night. As the weather gets colder and the ice is closer to forming, the bear activity escalates. Just before freeze-up, staff has chased more than a dozen bears along the edge of town in one day.

The removal of bears from the community or an area where they pose a danger is accomplished by hazing. This involves shooting scare cartridges from shotguns or pistols that cause loud bangs or screams, and following the bears with vehicles.

Bears that do not respond to noise stimulus are sometimes shot with rubber bullets (which don’t harm the bear) or a paint ball gun to encourage them on their way. Particularly stubborn bears are sometimes pushed away by helicopter. If a bear continues to return and will not enter a live trap, it will be immobilized with the use of a tranquilizer gun. This is done by either shooting from the ground, or darting the bear from a helicopter.

Polar Bear Culvert Trap

Polar Bear Culvert Trap

To prevent bears from entering the community, staff will establish a “trap line” around the perimeter of the community to intercept the bears. Bears are captured by use of culvert traps, which are large culverts with metal screens on one end and doors on the other.

The traps are baited with seal meat and fat, which is attached to a trigger in the front of the trap. When the bear enters the trap and pulls on the bait, the door is released and locks. The trap is permanently mounted onto a trailer, which allows the bears to be transported to the Polar Bear Holding Facility.

In 2011, staff responded to 341 polar bear occurrences and handled 61 bears. The most common age class of bears handled is sub-adults (between two- and five-years old).

Each bear is weighed when entering and exiting the Polar Bear Holding Facility, and is measured for length and girth and checked for overall health before it is released.

If not previously handled, each bear will receive ear tags and lip tattoos. The lip tattoo is a number matching their ear tags, and becomes the bear’s permanent “name”. Information such as the date and location of capture, as well as the bear’s health information, is recorded on a data sheet, which is later entered into a data base.

Each year the data base is updated and every bear that has ever been captured will be on record. Many of the bears handled have been tagged previously, some of which have been handled numerous times.

Before freeze-up, bears that are released from the holding facility are tranquilized and then transported by helicopter in a sling approximately 70 kilometers north of Churchill.  They are then released along the coast of the Hudson Bay. Most of the bears will continue moving northward looking for the first ice to form.

At the time of release the bears are marked with a green cattle marker spot on the top of their shoulder. This spot allows for easy recognition of released bears during that season, but wears off within a month or two. Very few bears return to Churchill during the same season. Those that do return and are able to be recaptured are held until the end of the season.

Polar bear jail in Churchill. Polar bear holding facility.

The polar bear holding facility in Churchill houses both single bears and family groups until they are ready for relocation.

After ice forms on the Hudson Bay, the remaining bears in the facility are released directly onto the ice of Hudson Bay by vehicle. The bears are loaded into culvert traps and hauled to the coastline and released. When the bears see the ice they are more than happy to get out on it, and to start hunting for seals.

The Polar Bear Alert Program is unique, and receives a large number of media and group presentation requests each year. Requests are accommodated as time permits, with the priority given to those that promote public education.

The most publicized and dramatized night of the entire bear season is Halloween. The safety of children trick or treating is a very real priority, and warrants special preparations. A helicopter patrol is done before dark and any bears found near town are hazed away. At least 12 two-person units are established from various agencies including Manitoba Conservation and Water Stewardship, R.C.M.P., Parks Canada, Canadian Rangers, the fire department, emergency medical services and Manitoba Hydro.

Some units take up strategic vantage positions while others form mobile patrols. Several media film crews and numerous photographers roam around the community to record the event. Experience has proven the best way to avoid any “tricks” is to carry a good supply of “treats” to share from your patrol vehicle.

The staff who administer the Polar Bear Alert Program in Churchill are fortunate to experience the privilege of working with these magnificent predators. Nowhere else in Manitoba offers the unique experiences that the staff in Churchill come to enjoy.

The Polar Bear Alert Program is recognized globally for its achievements in protecting human life and preserving the lives of polar bears. The number of bears euthanized in protection of life or property is, on average, less than one per year. Thanks must be given to the people of Churchill, whose cooperation makes this unique program such a success.

1983 – The Worst Year Ever for Western Hudson Bay Polar Bears

by Ian Thorleifson

Ian carrying tranquilized polar-bear

Ian carrying tranquilized polar bear near Hudson Bay

We’ve all heard many sad stories and dire predictions about the future of the polar bears of Western Hudson Bay. And they have had some tough years – particularly in the early 2000s. The worst year they ever had was not recent however, it was almost 30 years ago. In 1983

My knowledge of 1983 is first hand. I was in charge of the Polar Bear Alert Program that year, and I was working as a biologist for Manitoba Wildlife Branch, and with the very capable crew from Ian Stirling’s group of the Canadian Wildlife Service.

But I must qualify that my observations are not backed by rigorous science – we simply did not have that defensible level of knowledge then. We did have a substantial amount of observations, notes and perceptions built up from many people’s observations over many years.

By 1983 the Canadian Wildlife Service had been intently working with the polar bears in Hudson Bay for about 15 years. A large percentage of the bears in the population were tagged – at least half of them, maybe three quarters. We estimated that there were about 1800 bears in the South Western Hudson Bay (SWHB) polar bear population at the time.

Productivity was very good – most mother bears had two cubs with them and many of those cubs were “independent yearlings” – able to hunt and care for themselves, and to allow their mothers to re-breed every two years – the most productive polar bear population known at the time.

Tourism, especially that related to polar bear watching, was starting to roll in Churchill – Dan Guravich and Len Smith and their Cape Churchill crew had been to the Cape for up to three weeks at a time for four years now – and their observations and photos had identified a “rogue’s gallery” of big old male bears who were at the Cape every year.

The winter of 1982-83 saw very heavy snowfall accumulating in SWHB, so heavy one could imagine the bears having a challenge getting through to the seals. When the bears were forced ashore, they were in “ok” condition, but not really fat. But they were early – by the first two weeks of July the ice had broken up and quickly melted completely out of the Bay. Then the summer was HOT. And DRY. We worked on the tundra with no shirts on – and no mosquitoes! The heat stressed the bears even more than the mosquitoes would have.

By November, there were a lot of bears around – and far too many were getting very skinny. In the middle of November, very cold weather brought a quick freeze – and bears started moving out onto the ice. Then came the big south wind with melting temperatures and weeks of fog and mist. The ice was completely melted, and the number of bears along the Coast was amazing – I counted 50 different bears in a 14-mile drive! Eight bears were shot by local people in self-defense. On November 29, a man was killed on the main street of Churchill by a young male bear. The Polar Bear Alert crew was handling as many as 15 bears a day. Walking skeletons were seen too often. And still no freeze-up until almost mid-December.

We did not realize the impact this all had on the population until a couple of years had gone by. At Cape Churchill, Dan could recognize only a couple of the “rogues” they had previously seen. And 1984 saw the lowest number of bear incidents in the history of the Alert Program.

Based on these observations and the “Mark/Recapture” rate of the next few years, we estimated that HALF of the SWHB population perished out on the ice that winter. We find very few dead bears, because they do not die where we can find them. Travel out on the Bay is very difficult and dangerous.

The population built up again in the late ‘80s and ‘90s – to at least 1200 to 1400 bears, then declined to the 950 or so estimated today. But no one year was ever as bad as 1983…the Worst Year Ever for polar bears.