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The western capercaillie, or simply capercaillie, is a heavy member of the grouse family and the largest of all extant grouse species. The heaviest-known specimen, recorded in captivity, weighed 7.2 kilograms (16 pounds). Found across Europe and the Palearctic, this primarily ground-dwelling forest grouse is renowned for its courtship display. This bird shows extreme sexual dimorphism, with males nearly twice the size of females.
The western capercaillie lives on various food types, including buds, leaves, berries, insects, grasses, and in the winter, mostly conifer needles. The food remains in their droppings, about 1 cm (1⁄2 in) in diameter and 5–6 cm (2–2+1⁄2 in) in length. Most of the year, the droppings are of solid consistency, but with the ripening of blueberries, these dominate the diet, and the feces become formless and bluish-black.
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Foxes are small to medium-sized, omnivorous mammals belonging to several genera of the family Canidae. They have a flattened skull, upright triangular ears, a pointed, slightly upturned snout, and a long bushy tail (or brush). Foxes are generally smaller than other members of the family Canidae, such as wolves and jackals, while they may be larger than some within the family, such as Raccoon dogs. In the largest species, the red fox, males weigh on average between 4.1 and 8.7 kilograms (9 and 19+1⁄4 pounds), while the fennec fox weighs just 0.7 to 1.6 kg (1+1⁄2 to 3+1⁄2 lb).
Fox features typically include a triangular face, pointed ears, an elongated rostrum, and a bushy tail. They are digitigrade (meaning they walk on their toes).
In the wild, the typical lifespan of a fox is one to three years, although individuals may live up to ten years. Unlike many canids, foxes are not always packed animals. Typically, they live in small family groups, but some (such as Arctic foxes) are known to be solitary. Foxes are omnivores. Their diet is primarily comprised of invertebrates, such as insects, and small vertebrates, such as reptiles and birds. They may also eat eggs and vegetation.
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The grizzly bear, also known as the North American brown bear or simply grizzly, is a population or subspecies of the brown bear inhabiting North America.
Most adult female grizzlies weigh 130–180 kg (290–400 lb), while adult males weigh 180–360 kg (400–790 lb). The average total length in this subspecies is between 198 cm (6.50 ft) and 240 cm (7.9 ft), with an average shoulder height of 102 cm (3.35 ft) and hindfoot length of 28 cm (11 in). Newborn bears may weigh less than 500 grams (1.1 lb). In the Yukon River area, mature female grizzlies can weigh as little as 100 kg (220 lb). For a female, these average weights would be 136 kg (300 lb) inland and 227 kilograms (500 lb) coastal, respectively.
Although grizzlies are of the order Carnivora and have the digestive system of carnivores, they are usually omnivores: their diets consist of both plants and animals.
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Hawks are birds of prey of the family Accipitridae. They are widely distributed and are found on all continents except Antarctica.
Past observations have indicated that while hawks can quickly adapt to any surroundings, hawks prefer an open habitat. Hawks usually like to live in places like deserts and fields, likely as it is easier to find prey. They can live anywhere and be found in mountainous plains and tropical, moist areas. A hawk's diet is predictable and includes a variety of smaller animals. Some of these small animals include snakes, lizards, fish, mice, rabbits, squirrels, birds, and any other type of small game that is found on the ground. More specifically, a red-shouldered hawk likes to eat smaller birds like doves and bugs like grasshoppers and crickets.
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A hedgehog is a spiny mammal of the subfamily Erinaceinae in the eulipotyplan family Erinaceidae.
Hedgehogs share distant ancestry with shrews (family Soricidae), with gymnures possibly being the intermediate link. They have changed little over the last fifteen million years. Like many first mammals, they have adapted to a nocturnal way of life. Their spiny protection resembles that of porcupines, rodents, and echidnas, a type of monotreme. Although traditionally classified in the now abandoned order Insectivora, hedgehogs are omnivorous. They feed on insects, snails, frogs, toads, snakes, bird eggs, carrion, mushrooms, grass roots, berries, melons, and watermelons. Berries constitute a significant part of an Afghan hedgehog's diet in early spring after hibernation.
During hibernation, a hedgehog's body temperature can decrease to about 2 °C (36 °F). When the animal awakes from hibernation, the body temperature rises from 2–5 °C (36–41 °F) back to its usual 30–35 °C (86–95 °F) body temperature
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A jay is a member of several species of medium-sized, usually colorful and noisy, passerine birds in the crow family Corvidae. Jay is omnivorous. Their diet consists of seeds, insects, and, less frequently, young birds and eggs. Jays mainly breed in deciduous woodland and, to a lesser extent, in coniferous forests. Jays in Ireland tend to be significantly shyer and more elusive than those found in Britain and the Continent and are only rarely seen in suburban gardens.
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Lizards are a widespread group of squamate reptiles, with over 7,000 species, across all continents except Antarctica and most oceanic island chains. Lizards range in size from chameleons and geckos a few centimeters long to the 3-meter-long Komodo dragon.
Most lizards are quadrupedal, running with a solid side-to-side motion. Some lineages have secondarily lost their legs and have long snake-like bodies. Some, such as the forest-dwelling Draco lizards, can glide. They are often territorial, the males fighting off other males and signaling, often with bright colors, to attract mates and intimidate rivals. Lizards are mainly carnivorous, often being sit-and-wait predators; many smaller species eat insects, while the Komodo eats mammals as big as water buffalo.
Lizards use various antipredator adaptations, including venom, camouflage, reflex bleeding, and the ability to sacrifice and regrow their tails.
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The Canada lynx is a medium-sized North American lynx that ranges across Alaska, Canada, and northern areas of the contiguous United States. It is characterized by its long, dense fur, triangular ears with black tufts at the tips, and broad, snowshoe-like paws. Its hindlimbs are longer than the forelimbs, so its back slopes down to the front. The lynx is a good swimmer and an agile climber. Lynx have a short tail, characteristic tufts of black hair on the tips of their ears, large, padded paws for walking on snow, and long whiskers on the face. Under their neck, they have a ruff with black bars resembling a bow tie, although this is often not visible. The lynx inhabits high-altitude forests with a dense cover of shrubs, reeds, and tall grass. Although this cat hunts on the ground, it can climb trees and swim swiftly, catching fish.
The lynx is usually solitary, although a small group may travel and hunt together occasionally. Mating takes place in the late winter, and the female gives birth to between one and four kittens once a year. The gestation time of the lynx is about 70 days. The young stay with the mother for one more winter, a total of around nine months, before moving out to live on their own as young adults. The lynx creates its den in crevices or under ledges. It feeds on a wide range of animals from white-tailed deer, reindeer, roe deer, small red deer, and chamois to smaller, more usual prey: snowshoe hares, fish, foxes, sheep, squirrels, mice, turkeys, and other birds, and goats. It also eats ptarmigans, voles, and grouse.
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A marten is a weasel-like mammal in the genus Martes within the subfamilyGuloninae, in the family Mustelidae. They have bushy tails and large paws with partially retractile claws. The fur varies from yellowish to dark brown, depending on the species; animal trappers value it for the fur trade. Martens are slender, agile animals adapted to living in the taiga, which inhabits coniferous and northern deciduous forests across the Northern Hemisphere. Martens are solitary animals, meeting only to breed in late spring or early summer. Litters of up to five blind and nearly hairless kits are born in early spring. They are weaned after around two months and leave the mother to fend for themselves at about three to four months of age. They are omnivorous.
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The moose (in North America) or elk (in Eurasia) (Alces alces) is a member of the New World deer subfamily and is the largest and heaviest extant species in the deer family. Most adult male moose have distinctive broad, palmate ('open-hand shaped') antlers; most other members of the deer family have antlers with a dendritic ('twig-like') configuration. Moose typically inhabit boreal forests, temperate broadleaf, and mixed forests of the Northern Hemisphere in temperate to subarctic climates. Hunting and other human activities have caused a reduction in the size of the moose's range over time. Its diet consists of both terrestrial and aquatic vegetation. Predators of moose include wolves, bears, humans, and (rarely) wolverines. Unlike most deer species, moose do not form herds and are solitary animals, aside from calves who remain with their mother until the cow begins estrus (typically at 18 months after the calf's birth). At this point, the cow chases them away. Although generally slow-moving and sedentary, moose can become aggressive and move quick if angered or startled. Their mating season in the autumn features energetic fights between males competing for a female.
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Owls are birds from the order Strigiformes, which includes over 200 species of mostly solitary and nocturnal birds of prey typified by an upright stance, a large, broad head, binocular vision, binaural hearing, sharp talons, and feathers adapted for silent flight. Exceptions include the diurnal northern hawk-owl and the gregarious burrowing owl.
Owls hunt mostly small mammals, insects, and other birds, although a few species specialize in hunting fish. They are found in all regions of the Earth except the polar ice caps and some remote islands.
Most owls are nocturnal, actively hunting their prey in darkness. Several types of owls are crepuscular—active during the twilight hours of dawn and dusk.
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Rabbits, also known as bunnies or bunny rabbits, are small mammals in the family Leporidae (which also contains the hares) of the order Lagomorpha (which also has the pikas). The European rabbit, introduced on every continent except Antarctica, is familiar throughout the world as a wild prey animal and a domesticated form of livestock and pet. With its widespread effect on ecologies and cultures, the rabbit is a part of daily life in many areas of the world—as food, clothing, a companion, and a source of artistic inspiration.
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The reindeer, also known as the caribou in North America, is a species of deer with circumpolar distribution, native to Arctic, subarctic, tundra, boreal, and mountainous regions.
Reindeer are ruminants, having a four-chambered stomach. They mainly eat lichens in winter, especially reindeer lichen; they are the only large mammal able to metabolize lichen owing to specialized bacteria and protozoa in their gut. They are also the only animals (except for some gastropods) in which the enzyme lichenase, which breaks down lichenin to glucose, has been found. However, they also eat the leaves of willows, birches, sedges, and grasses.
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The roe deer (Capreolus capreolus), also known as the roe, western roe deer, or European roe, is a species of deer. The male of the species is sometimes referred to as a roebuck. The roe is a small deer, reddish and grey-brown, and well-adapted to cold environments. The species is widespread in Europe, from the Mediterranean to Scandinavia, Scotland to the Caucasus, and east to northern Iran and Iraq. It feeds mainly on grass, leaves, berries, and young shoots. It particularly likes very young, tender grass with a high moisture content, i.e., grass that has received rain the day before. Roe deer will not generally venture into a field that has had or has livestock in it. It feeds mainly on grass, leaves, berries, and young shoots. It particularly likes very young, tender grass with a high moisture content, i.e., grass that has received rain the day before. Roe deer will not generally venture into a field that has had or has livestock in it.
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Salamanders are a group of amphibians typically characterized by their lizard-like appearance, with slender bodies, blunt snouts, short limbs projecting at right angles to the body, and the presence of a tail in both larvae and adults. Salamander diversity is highest in eastern North America, and most species are found in the Holarctic realm, with some species present in the Neotropical realm. Salamanders rarely have more than four toes on their front legs and five on their rear legs, but some species have fewer digits, and others lack hind limbs. Their permeable skin usually relies on habitats in or near water or other cool, damp places. Some salamander species are fully aquatic throughout their lives, some take to the water intermittently, and others are entirely terrestrial as adults. Salamanders are opportunistic predators. They are generally not restricted to specific foods but feed on almost any organism of a reasonable size.
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Squirrels are the family Sciuridae family, which includes small or medium-sized rodents. Squirrels are indigenous to the Americas, Eurasia, and Africa and were introduced by humans to Australia. The earliest known fossilized squirrels date from the Eocene epoch, and among other living rodent families, the squirrels are most closely related to the mountain beaver and the dormice. Squirrels are generally small animals, ranging in size from 10–14 cm (3.9–5.5 in) in total length and just 12–26 g (0.42–0.92 oz) in weight. Squirrels mate either once or twice a year and, following a gestation period of three to six weeks, give birth to several offspring that vary by species. The young are altricial, being born naked, toothless, and blind. In most species of squirrel, the female alone looks after the young, which are weaned at six to ten weeks and become sexually mature by the end of their first year. Generally, the ground-dwelling squirrel species are social, often living in well-developed colonies, while the tree-dwelling species are more solitary.
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The tomtit is a small passerine bird in the family Petroicidae. It is endemic to the islands of New Zealand, ranging across the main islands as well as several of the outlying islands. The tomtit is a small (13 cm, 11 g) bird with a large head and a short bill. The male North Island subspecies has a black head, back, wings (with a white wing bar), and a white belly. The subspecies from South Island, the Chatham Islands, and the Auckland Islands are similar but have a yellow band across the breast between the black head and white belly. The females are brown instead of black. The Snares Island subspecies is entirely black and is known as the black tit. The tomtit is mostly an insectivore, feeding on small invertebrates, such as beetles, caterpillars, spiders, moths, wētā, earthworms, and flies. Fruit is taken during the winter and autumn. Most subspecies feed in vegetation, waiting on a perch and watching for prey. Insects are also gleaned from branches and leaves. The Snares subspecies also feed on the ground in a similar fashion to the North or South Island robins.
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The wild boar, also known as the wild swine, common wild pig,]Eurasian wild pig, or simply wild pig, is a suid native to much of Eurasia and North Africa and has been introduced to the Americas and Oceania.
The wild boar is a bulky, massively built suid with short and relatively thin legs. The trunk is short and robust, while the hindquarters are comparatively underdeveloped. The region behind the shoulder blades rises into a hump, and the neck is short and thick to nearly immobile. The animal's head is large, taking up to one-third of the body's entire length. Boars are typically social animals, living in female-dominated sounders consisting of barren sows and mothers with young led by an old matriarch. Male boars leave their sounder at 8–15 months, while females either remain with their mothers or establish new territories nearby. Subadult males may live in loosely knit groups, while adult and elderly males tend to be solitary outside the breeding season. The wild boar is a highly versatile omnivore whose diversity in the choice of food is comparable to that of humans.
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The wolf, also known as the gray wolf or grey wolf, is a large canine native to Eurasia and North America. The wolf is the most prominent extant member of the Canidae family and is further distinguished from coyotes and jackals by a broader snout, shorter ears, a shorter torso, and a longer tail. It is slender and powerfully built, with a large, deeply descending rib cage, a sloping back, and a heavily muscled neck. The wolf's legs are moderately longer than other canids, enabling the animal to move swiftly and overcome the deep snow that covers most of its geographical range in winter. Like all land mammals that are pack hunters, the wolf feeds predominantly on wild herbivorous hoofed mammals that can be divided into large sizes of 240–650 kg (530–1,430 lb) and medium sizes 23–130 kg (51–287 lb), and have a body mass similar to that of the combined mass of the pack members. The wolf specializes in preying on the vulnerable individuals of large prey, with a pack of 15 able to bring down an adult moose. The variation in diet between wolves living on different continents is based on the variety of hoofed mammals and available smaller, domesticated prey.
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Woodpeckers are part of the family Picidae, including the piculets, wrynecks, and sapsuckers. Members of this family are found worldwide, except for Australia, New Guinea, New Zealand, Madagascar, and the extreme polar regions. Most species live in forests or woodland habitats.
Woodpecker species feed on insects and other invertebrates living under bark and in wood. Still, the family is characterized by its dietary flexibility, with many species being both highly omnivorous and opportunistic. The diet includes ants, termites, beetles, their larvae, caterpillars, spiders, other arthropods, bird eggs, nestlings, small rodents, lizards, fruit, nuts, and sap. Excavation takes many insects and their grubs from living and dead trees. Overall, woodpeckers are arboreal birds of wooded habitats. They reach their most remarkable diversity in tropical rainforests but occur in almost all suitable habitats, including woodlands, savannahs, scrublands, and bamboo forests. Even grasslands and deserts have been colonised by various species. These habitats are more easily occupied where a small number of trees exist, or in the case of desert species like the Gila woodpecker, tall cacti are available for nesting. Some are specialists and are associated with coniferous or deciduous woodlands, or even, like the acorn woodpecker, with individual tree genera (oaks in this case). Other species are generalists and are able to adapt to forest clearance by exploiting secondary growth, plantations, orchards, and parks. Forest-dwelling species generally need rotting or dead wood on which to forage.
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