Canada is home to three species of jay: the blue jay, Steller’s jay and grey jay.
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Canada is home to three species of jay: the blue jay, Steller’s jay and grey jay.
Marten (Martes americana), slender weasel specialized for life in the northern coniferous forests; found from Alaska and BC to Newfoundland and into the US.
Butterfly, term referring to insects of order Lepidoptera [Gk "scaly wings"]. The Canadian fauna includes 272 known species, compared to 695 known from North America as a whole, and over 20 000 worldwide.
Caribou are members of the deer family. They may be further categorized based on where they live and how they behave. Caribou in Canada are generally categorized into three types: peary, barren-ground and woodland. Taken together, caribou are found in most Canadian provinces and territories, with the exception of the Maritimes.
The Canadian Prairies were peopled in six great waves of migration, spanning from prehistory to the present. The migration from Asia, about 13,300 years ago, produced an Indigenous population of 20,000 to 50,000 by about 1640. Between 1640 and 1840, several thousand European and Canadian fur traders arrived, followed by several hundred British immigrants. They created dozens of small outposts and a settlement in the Red River Colony, where the Métis became the largest part of the population. The third wave, from the 1840s to the 1890s, consisted mainly but not solely of Canadians of British heritage. The fourth and by far the largest wave was drawn from many nations, mostly European. It occurred from 1897 to 1929, with a pause (1914–22) during and after the First World War. The fifth wave, drawn from other Canadian provinces and from Europe and elsewhere, commenced in the late 1940s. It lasted through the 1960s. The sixth wave, beginning in the 1970s, drew especially upon peoples of the southern hemisphere. It has continued, with fluctuations, to the present. Throughout the last century, the region has also steadily lost residents, as a result of migration to other parts of Canada, to the United States, and elsewhere.
The energy contained in sunlight is the source of life on Earth. Humans can harness it to generate power for our activities without producing harmful pollutants. There are many methods of converting solar energy into more readily usable forms of energy such as heat or electricity. The technologies we use to convert solar energy have a relatively small impact on the environment. However, they each have disadvantages that have kept them from being widely adopted.
In Canada, the use of solar energy to generate electricity and heat is growing quickly and is helping reduce pollution related to energy production. Despite Canada’s cold climate and high latitudes (which get less direct sunlight than mid-latitudes), solar power technologies are used in many places, from household rooftops to large power plants. The Canada Energy Regulator (formerly the National Energy Board) expects solar power to make up 3 per cent of Canada’s total electricity generation capacity by 2040.
Flatfish is the common name for fish belonging to the order Pleuronectiformes. There are 14 families of flatfish and over 800 species worldwide. In Canadian waters there are approximately 39 species of flatfish, from five families. These families are Pleuronectidae, Bothidae, Paralichthyidae, Scophthalmidae and Cynoglossidae. Familiar flatfishes found in Canada include halibut, plaice, flounder and turbot. Among their distinguishing features, flatfish have both eyes on one side of their body.
Rat is a common name for certain mammals of order Rodentia, family Muridae.
Climate change occurs when long-term weather patterns begin to shift. These periods of change have occurred throughout the Earth’s history over extended periods of time. However, since the Industrial Revolution the world has been warming at an unprecedented rate. Because of this, the current period of climate change is often referred to as “global warming.” Human activities that release heat-trapping greenhouse gases, such as the burning of fossil fuels, are largely responsible for this increased rate of change. The implications of this global increase in temperature are potentially disastrous and include extreme weather events, rising sea levels and loss of habitat for plants, animals and humans. In Canada, efforts to mitigate climate change include phasing-out coal-fired power plants in Ontario and instituting a carbon tax in British Columbia.
(This is the full-length entry about climate change. For a plain-language summary, please see Climate Change (Plain-Language Summary).)
Arctic sovereignty is a key part of Canada’s history and future. The country has 162,000 km of Arctic coastline. Forty per cent of Canada’s landmass is in its three northern territories. Sovereignty over the area has become a national priority for Canadian governments in the 21st century. There has been growing international interest in the Arctic due to resource development, climate change, control of the Northwest Passage and access to transportation routes. As Prime Minister Stephen Harper said in 2008, “The geopolitical importance of the Arctic and Canada’s interests in it have never been greater.”
The Rocky Mountain Trench is a long and deep valley extending approximately 1,500 km from the Bitterroot Valley in northwest Montana through British Columbia to the Liard Plain just south of the Yukon Territory. Its predominantly flat floor is 3–20 km wide and ranges in elevation between 600 m and 1,000 m above sea level. With walls made of sedimentary, volcanic and igneous rock, the Trench is sometimes referred to as the “Valley of a Thousand Peaks” because of the towering mountain ranges on either side: the Rocky Mountains to the east and the Columbia, Omineca and Cassiar mountains to the west. Humans have relied on the rich resources provided by this distinctive landscape from pre-colonial times to the present.
In the deep ocean a tsunami travels at about the speed of a commercial jetliner and its length from crest to crest can be 100 km or more, but its height will be less than a metre and therefore it will not be noticed by ships at sea.
Moose are the largest living member of the deer family (Cervidae). Four subspecies are found in Canada: the Alaska/Yukon moose (Alces alces gigas), the shiras moose (Alces alces shirasi), the western Canada moose (Alces alces andersoni) and the eastern Canada moose (Alces alces americana). They live in every province and territory except Prince Edward Island. Often considered a symbol of Canada, the moose is featured on Ontario’s provincial coat of arms.
Plate tectonics is the theory proposing that Earth’s outer rocky shell is divided into seven major and several smaller rigid plates. Forces generated by heat losses from the planet’s interior constantly move the plates about. Plate movements, ongoing over millions of years (see Geological History), open and close ocean basins, generate volcanoes, raise mountains, facilitate accumulation of mineral and petroleum deposits, and influence evolution and climate change. Friction between plates prevents steady motion and stores energy that is released in sudden movements, causing earthquakes.
Keystone XL was a proposed 1,947 km long pipeline project that would have carried crude oil from Alberta to Nebraska. It was owned by Calgary-based TC Energy Corporation. The pipeline was named XL for “export limited.” First proposed in July 2008, it was the prospective fourth phase of TC Energy’s existing Keystone Pipeline system. In Canada, Keystone XL had the support of both the federal and Alberta governments. However, the project faced significant opposition and legal challenges on environmental grounds. In January 2021, United States president Joe Biden cancelled its permit on his first day in office. On 9 June 2021, TC Energy and the Alberta government announced the termination of the Keystone XL pipeline.
Fleas are very small, wingless, laterally flattened insects of the order Siphonaptera. They’re best known for being external parasites on mammals and occasionally birds. Adult fleas live in the fur or feathers of their hosts, feeding on their blood to survive and reproduce. While fleas do feed off humans, more common host animals include rodents, dogs and cats. The “human” flea, Pulex irritans, actually attacks a broad range of mammal species, and the same is true of most flea species that bite humans. About 2,000 species and subspecies are known worldwide, with at least 127 found in Canada, most of them in British Columbia and Alberta.
The beaver (Castor canadensis) is a herbivorous mammal. It is Canada’s largest rodent and the second-largest rodent in the world (after the capybara). It is primarily nocturnal and lives a semi-aquatic life. The beaver is one of the only mammals, other than humans, that can manufacture its own environment. It is known for building dams, canals and lodges. Its colonies are created by one or more beaver-built dams, which provide still and deep water for protection against predators. An emblem of Canada older than the maple leaf, the beaver has had a greater impact on Canadian history and exploration than any other animal or plant species. (See also Fur Trade in Canada.)
Members of the Central Asiatic Expedition, led by the American Museum of Natural History, first recognized dinosaur eggs in Mongolia in the 1920s. Since then, paleontologists have discovered fossilized remains of dinosaur eggs at over 200 locations worldwide. These locations include sites in Africa, China, Europe, India, Korea, and the Americas. The first dinosaur eggs from North America were discovered in Montana in the late 1970s. In Canada, dinosaur eggshell fragments were initially found in the early 1980s. Complete dinosaur eggs were discovered in 1987 at a site in southern Alberta known as Devil’s Coulee.
The Montreal metro opened on 14 October 1966. The second Canadian subway system after Toronto’s, which opened in 1954, the Montreal metro was the first subway in North America to run on rubber tires instead of metal wheels. Extensions to the Montreal metro were built on Montreal Island over the two decades after it opened, and then to the city of Laval, on the island of Île Jésus, during the 2000s. The system runs entirely underground, and each station has a distinct architecture and design. The Montreal metro consists of four lines running a total of 71 km and serving 68 stations. In 2018, its passengers made more than 383 million trips.
A species is endangered if there are threats to its survival. Plants are put at risk for several reasons, including: climate change and the loss of natural habitat to cities, agriculture and industry. In Canada, these activities threaten entire natural ecosystems, such as older forests and Prairie grasslands. As of 2021, 250 plant species are at risk in Canada, according to the Committee on the Status of Endangered Wildlife in Canada. In addition, four are extirpated and one is extinct. The committee’s definition of a wildlife species includes taxonomic categories as well as geographically distinct populations. For example, the bent spike-rush (Eleocharis geniculate) is included on the list of at risk plant species twice, as there are two different populations, one in British Columbia and one in Ontario, facing different threats to their survival. (See also Endangered Animals in Canada.)