Canada boasts more than 3,500 protected areas, including 42 national parks.

But the Canadian Parks and Wilderness Society (CPAWS) in its report warned that several species are at risk of dying out because their designated confines are too small.

"In Canada we have one of the best opportunities left in the world to create big parks that can protect species that need large areas of wilderness to survive," said CPAWS executive director Eric Hebert-Daly.

"Bigger, better managed parks, and more of them, are needed if parks are to fulfill their critical role in protecting Canada's wildlife."

In the past year, the government established the new Gwaii Haanas National Marine Conservation Area off the coast of British Columbia, where orca whales feed.

Ottawa also announced it would create new parks to protect wild horses on Sable Island, Nova Scotia and in the Mealy Mountains of Newfoundland, where a herd of woodland caribou roam.

But CPAWS said this falls short.

The non-profit group, which played a lead role in establishing two-thirds of Canada's protected wilderness spaces over the past five decades, prescribed creating even more parks and expanding existing park boundaries.

It also called for the restoration of "wildlife movement corridors" to allow animals to roam between protected areas, for interbreeding and adapting to environmental changes.

"Many of our parks, particularly in southern Canada, are small islands of nature in developed landscapes," the report noted.

"And evidence is growing that for parks to effectively protect wildlife, particularly those species that range over large areas, they need to protect big areas of habitat and be connected together into networks of protected lands and waters."

As examples, the report blamed "habitat fragmentation" for grizzly bear deaths and for the decline of woodland caribou in Banff National Park until the last five caribou were wiped out in an avalanche last year.

Grizzly bears need "an abundance of secure habitat (away from roads and trails)" to survive, the report said. A male grizzly bear can roam over 1,000 square kilometers (385 square miles) to find all the food, shelter, and mates he needs in his lifetime.

Banff 's 6,641 square kilometers (2,564 square miles) is "not enough space for a healthy, viable population to survive," it said.

Six grizzly bears were killed by trains outside the park since 2007 due to "a lack of effective movement corridors."

Banff is connected to Jasper National Park to the north, and to protected areas in Kananaskis Country to the south, but "connecting this complex of protected areas further south is key to the success of this species."

The report was also critical of a proposed Tursujuq Provincial Park's boundaries in Quebec's far north for not including the majority of the habitat of the world's only harbor seals that live permanently in freshwater.

And the development of wineries, retirement homes, small ranches and golf courses near a proposed South Okanagan-Similkameen National Park Reserve in British Columbia is encroaching on the habitat of one-third of the province's species at risk.

In Manitoba province, meanwhile, a recent hunting ban in and near Nopiming Provincial Park is hoped will boost the faltering number of moose that move in and out of the park.

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