This video still was taken from our expedition video, The Ishawooa Expedition shot on location in Wyoming. You can view the video for FREE online at our website www.thenatureexplorers.com
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I'm Michael C. Clark Naturalist, Explorer, and Cinematographer. My compañero Loganapithicus and I travel the world in search of unique ecosystems to explore and document cinéma-vérité style. Our expeditions usually take place in an area of five square miles or less within a duration of 7-21 days and we focus on the entire ecosystem plants, animals, geology, weather, and more. We do not specifically seek out, bait, or wait for species, we film what we encounter as we explore the ecosystem on foot.
The purpose of our expeditions is to help in homo sapien's ceaseless quest for knowledge by documenting the ecosystems as they are forever changing with plant Earth as they have for billions of years. Our ecosystem videos can be viewed FREE by anyone and used for nonprofit educational instruction and testing purposes as well as scientific study of the ecosystems. Therefore we have left out narrations and used music in the background when no natural sound is available, ultimately leaving the videos for self interpretation, individual discovery, and for professors to explain or show as examples in a classroom setting.
We are unable to film every species in the selected ecosystems, as it is impossible to get everything in such a short time frame, one could spend an entire lifetime studying an ecosystem of planet Earth and still never see it all. No plant or animal species were harmed during our expeditions, all species are filmed in their natural habitat and are not coerced or paid for any performances. This is Mother Nature's movie if you have script questions please direct them towards her.
View our website www.thenatureexplorers.com
Mammals are members of class Mammalia ( /məˈmeɪli.ə/), air-breathing vertebrate animals characterized by the possession of endothermy, hair, three middle ear bones, and mammary glands functional in mothers with young. Most mammals also possess sweat glands and specialized teeth. The largest group of mammals, the placentals, have a placenta which feeds the offspring during gestation. The mammalian brain, with its characteristic neocortex, regulates endothermic and circulatory systems, the latter featuring red blood cells lacking nuclei and a four-chambered heart. Mammals range in size from the 30–40 millimeter (1- to 1.5-inch) bumblebee bat to the 33-meter (108-foot) blue whale.
The word "mammal" is modern, from the scientific name Mammalia coined by Carl Linnaeus in 1758, derived from the Latin mamma ("teat, pap"). All female mammals nurse their young with milk, which is secreted from special glands, the mammary glands. According to Mammal Species of the World, 5,702 species were known in 2005. These were grouped in 1,229 genera, 153 families and 29 orders. In 2008 the IUCN completed a five-year, 17,000-scientist Global Mammal Assessment for its IUCN Red List, which counted 5,488 accepted species at the end of that period. In some classifications, the mammals are divided into two subclasses (not counting fossils): the Prototheria (order of Monotremata) and the Theria, the latter composed of the infraclasses Metatheria and Eutheria. The marsupials comprise the crown group of the Metatheria and therefore include all living metatherians as well as many extinct ones; the placentals likewise constitute the crown group of the Eutheria.
Except for the five species of monotremes (which lay eggs), all living mammals give birth to live young. Most mammals, including the six most species-rich orders, belong to the placental group. The three largest orders, in descending order, are Rodentia (mice, rats, porcupines, beavers, capybaras, and other gnawing mammals), Chiroptera (bats), and Soricomorpha (shrews, moles and solenodons). The next three largest orders, depending on the classification scheme used, are the primates, to which the human species belongs, the Cetartiodactyla (including the even-toed hoofed mammals and the whales), and the Carnivora (cats, dogs, weasels, bears, seals, and their relatives). While the classification of mammals at the family level has been relatively stable, different treatments at higher levels—subclass, infraclass, and order—appear in contemporaneous literature, especially for the marsupials. Much recent change has reflected the results of cladistic analysis and molecular genetics. Results from molecular genetics, for example, have led to the adoption of new groups such as the Afrotheria and the abandonment of traditional groups such as the Insectivora.
The early synapsid mammalian ancestors were sphenacodont pelycosaurs, a group that also included Dimetrodon. At the end of the Carboniferous period, this group diverged from the sauropsid line that led to today's reptiles and birds. Preceded by many diverse groups of non-mammalian synapsids (sometimes referred to as mammal-like reptiles), the first mammals appeared in the early Mesozoic era. The modern mammalian orders arose in the Paleogene and Neogene periods of the Cenozoic era.
Chipmunks are small, striped squirrels. All species of chipmunks are found in North America, with the exception of the Siberian chipmunk, which is found in Asia.
Chipmunks may be classified either as a single genus, Tamias, or as three genera: Tamias, which includes the eastern chipmunk; Eutamias, which includes the Siberian chipmunk; and Neotamias, which includes the 23 remaining, mostly western, species. These classifications are arbitrary, and most taxonomies over the twentieth century have placed the chipmunks in a single genus. However, studies of mitochondrial DNA show that the divergence between each of the three chipmunk groups is comparable to the genetic dissimilarity between Marmota and Spermophilus.
Tamias is Greek for "storer," a reference to the animals' habit of collecting and storing food for winter use.
The common name originally may have been spelled "chitmunk," from the native Odawa (Ottawa) word jidmoonh, meaning "red squirrel" (cf. Ojibwe, ajidamoo). The earliest form cited in the Oxford English Dictionary (from 1842) is "chipmonk," but "chipmunk" appears in several books from the 1820s and 1830s. Other early forms include "chipmuck" and "chipminck," and in the 1830s they were also referred to as "chip squirrels," probably in reference to the sound they make. In the mid-1800s, John James Audubon and his sons included a lithograph of the chipmunk in their Viviparous Quadrupeds of North America, calling it the "Chipping Squirrel [or] Hackee." Chipmunks have also been referred to as "striped squirrels," "chippers," "munks," "timber tigers," or "ground squirrels," although the name "ground squirrel" usually refers to other squirrels, such as those of the genus Spermophilus.
Squirrels belong to a large family of small or medium-sized rodents called the Sciuridae. The family includes tree squirrels, ground squirrels, chipmunks, marmots (including woodchucks), flying squirrels, and prairie dogs. Squirrels are indigenous to the Americas, Eurasia, and Africa, and have been introduced to Australia. The earliest known squirrels date from the Eocene and are most closely related to the mountain beaver and to the dormouse among living species.
The living squirrels are divided into five subfamilies, with about 58 genera and some 285 species. The oldest squirrel fossil, Hesperopetes, dates back to the Chadronian (late Eocene, about 40–35 million years ago) and is similar to modern flying squirrels.
A variety of fossil squirrels, from the latest Eocene to the Miocene, could not be assigned with certainty to any living lineage. At least some of these probably were variants of the oldest basal "protosquirrels" (in the sense that they lacked the full range of living squirrels' autapomorphies). The distribution and diversity of such ancient and ancestral forms suggest the squirrels as a group may have originated in North America.
Deer (singular and plural) are the ruminant mammals forming the family Cervidae. Species in the Cervidae family include white-tailed deer, mule deer such as black-tailed deer, elk, moose, red deer, reindeer (caribou), fallow deer, roe deer and chital. Male deer of all species (except the Chinese water deer) and also female reindeer grow and shed new antlers each year. In this they differ from permanently horned animals such as antelope; these are in the same order as deer and may bear a superficial resemblance. The musk deer of Asia and water chevrotain (or mouse deer) of tropical African and Asian forests are not usually regarded as true deer and form their own families, Moschidae and Tragulidae, respectively.
Deer are widely distributed, with indigenous representatives in all continents except Antarctica and Australia, though Africa has only one native species, the Red Deer, confined to the Atlas Mountains in the northwest of the continent. However, Fallow Deer have been introduced to South Africa.
Deer live in a variety of biomes ranging from tundra to the tropical rainforest. While often associated with forests, many deer are ecotone species that live in transitional areas between forests and thickets (for cover) and prairie and savanna (open space). The majority of large deer species inhabit temperate mixed deciduous forest, mountain mixed coniferous forest, tropical seasonal/dry forest, and savanna habitats around the world. Clearing open areas within forests to some extent may actually benefit deer populations by exposing the understory and allowing the types of grasses, weeds, and herbs to grow that deer like to eat. Additionally, access to adjacent croplands may also benefit deer. However, adequate forest or brush cover must still be provided for populations to grow and thrive.
The earliest fossil deer including Heteroprox date from the Oligocene of Europe, and resembled the modern muntjacs. Later species were often larger, with more impressive antlers. They rapidly spread to the other continents, even for a time occupying much of northern Africa, where they are now almost wholly absent. Some extinct deer had huge antlers, larger than those of any living species. Examples include Eucladoceros, and the giant deer Megaloceros, whose antlers stretched to 3.5 metres across.
Syndyocera was one of the first animals considered to be related to the deer, sharing similar features common with the deer, horse, giraffe, and antelope. Fossils show it had bony skull outgrowths that resembled non-deciduous antlers found in Northern America approximately 35 million years ago. Another animal also thought to be related to the deer is the world's oldest known antler-shedding deer known as Dicrocerus elegans. This animal's sediment deposits are found in European soil dating back to between 15–30 million years ago. Yet another distant ancestor is thought to be Archaeomeryx[c