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Atlantic puffin

The Atlantic puffin, also known as the common puffin, is a species of seabird in the auk family. It is the only puffin native to the Atlantic Ocean; two related species, the tufted puffin and the horned puffin, are found in the northeastern Pacific. The Atlantic puffin breeds in Russia, Iceland, Ireland, Britain, Norway, Greenland, Newfoundland and Labrador, Nova Scotia, and the Faroe Islands, and as far south as Maine in the west and France in the east. It is most commonly found in the Westman Islands, Iceland. Although it has a large population and a wide range, the species has declined rapidly, at least in parts of its range, resulting in it being rated as vulnerable by the IUCN. On land, it has the typical upright stance of an auk. At sea, it swims on the surface and feeds on zooplankton, small fish, and crabs, which it catches by diving underwater, using its wings for propulsion.

Taxonomy and etymology
}} The Atlantic puffin is a species of seabird in the order Charadriiformes. It is in the auk family, Alcidae, which includes the guillemots, typical auks, murrelets, auklets, puffins, and the razorbill. The rhinoceros auklet (Cerorhinca monocerata) and the puffins are closely related, together composing the tribe Fraterculini. The Atlantic puffin is the only species in the genus Fratercula to occur in the Atlantic Ocean. Two other species are known from the northeast Pacific, the tufted puffin (Fratercula cirrhata) and the horned puffin (Fratercula corniculata), the latter being the closest relative of the Atlantic puffin. The generic name Fratercula comes from the Medieval Latin fratercula, little friar, a reference to their black and white plumage, which resembles monastic robes. The specific name arctica refers to the northerly distribution of the bird, being derived from the Greek ἄρκτος (arktos), the bear, referring to the northerly constellation, the Ursa Major (Great Bear). The vernacular name "puffin" – puffed in the sense of swollen – was originally applied to the fatty, salted meat of young birds of the unrelated species Manx shearwater (Puffinus puffinus), which in 1652 was known as the "Manks puffin". It is an Anglo-Norman word (Middle English pophyn or poffin) used for the cured carcasses. The Atlantic puffin acquired the name at a much later stage, possibly because of its similar nesting habits, and it was formally applied to Fratercula arctica by Pennant in 1768. The three subspecies generally recognized are: • F. a. arcticaF. a. grabaeF. a. naumanni The only morphological difference between the three is their size. Body length, wing length, and the size of the beak all increase at higher latitudes. For example, a puffin from northern Iceland (subspecies F. a. naumanii) weighs about and has a wing length of , while one from the Faroes (subspecies F. a. grabae) weighs and has a wing length of . Individuals from southern Iceland (subspecies F. a. arctica) are intermediate between the other two in size. Ernst Mayr has argued that the differences in size are clinal and are typical of variations found in the peripheral population and that no subspecies should be recognised. ==Description==
Description
The Atlantic puffin is sturdily built with a thick-set neck and short wings and tail. It is in length from the tip of its stout bill to its blunt-ended tail. Its wingspan is and on land it stands about high. The male is generally slightly larger than the female, but they are coloured alike. The forehead, crown, and nape are glossy black, as are the back, wings, and tail. A broad, black collar extends around the neck and throat. On each side of the head is a large, lozenge-shaped area of very pale grey. These face patches taper to a point and nearly meet at the back of the neck. The shape of the head creates a crease extending from the eye to the hindmost point of each patch, giving the appearance of a grey streak. The eyes look almost triangular because of a small, peaked area of horny blue-grey skin above them and a rectangular patch below. The irises are brown or very dark blue, and each has a red orbital ring. The underparts of the bird, the breast, belly, and under tail coverts, are white. By the end of the breeding season, the black plumage may have lost its shine or even taken on a slightly brown tinge. The legs are short and set well back on the body, giving the bird its upright stance when on land. Both legs and large webbed feet are bright orange, contrasting with the sharp, black claws. This makes the beak appear less broad, the tip less bright, and the base darker grey. The eye ornaments are shed, and the eyes appear round. At the same time, the feathers of the head and neck are replaced, and the face becomes darker. This winter plumage is seldom seen by humans because when they have left their chicks, the birds head out to sea and do not return to land until the next breeding season. The juvenile bird is similar to the adult in plumage, but altogether duller with a much darker grey face and yellowish-brown beak tip and legs. After fledging, it makes its way to the water and heads out to sea, and does not return to land for several years. In the interim, each year, it will have a broader bill, paler face patches, and brighter legs and beaks. It mostly moves by paddling along efficiently with its webbed feet and seldom takes to the air. ==Distribution==
Distribution
The Atlantic puffin is a bird of the colder waters of the North Atlantic Ocean. It breeds on the coasts of northwest Europe, the Arctic fringes, and eastern North America. More than 90% of the global population is found in Europe (4,770,000–5,780,000 pairs, equalling 9,550,000–11,600,000 adults) Other major breeding locations include the north and west coasts of Norway, the Faroe Islands, Shetland and Orkney, the west coast of Greenland, and the coasts of Newfoundland. Smaller-sized colonies are also found elsewhere in the British Isles, the Murmansk area of Russia, Novaya Zemlya, Spitzbergen, Labrador, Nova Scotia, and Maine. Islands seem particularly attractive to the birds for breeding as compared to mainland sites, In a long-living bird with a small clutch size, such as the Atlantic puffin, the survival rate of adults is an important factor influencing the success of the species. Only 5% of the ringed puffins that failed to reappear at the colony did so during the breeding season. The rest were lost some time between departing from land in the summer and reappearing the following spring. The birds spend the winter widely spread out in the open ocean, though a tendency exists for individuals from different colonies to overwinter in different areas. Little is known of their behaviour and diet at sea, but no correlation was found between environmental factors, such as temperature variations, and their mortality rate. A combination of the availability of food in winter and summer probably influences the survival of the birds, since individuals starting the winter in poor condition are less likely to survive than those in good condition. ==Behaviour==
Behaviour
Like many seabirds, the Atlantic puffin spends most of the year far from land in the open ocean and visits coastal areas only to breed. It is a sociable bird, and it usually breeds in large colonies. At sea Atlantic puffins lead solitary existences when out at sea, and this part of their lives has been little studied, as the task of finding even one bird on the vast ocean is formidable. When at sea, they bob about like a cork, propelling themselves through the water with powerful thrusts of their feet and keeping turned into the wind, even when resting and apparently asleep. They spend much time each day preening to keep their plumage in order and spread oil from their preen glands. Their downy under plumage remains dry and provides thermal insulation. In common with other seabirds, their upper surface is black and underside white. This provides camouflage, with aerial predators unable to locate the birds against the dark, watery background, and underwater attackers fail to notice them as they blend in with the bright sky above the waves. The bird's flight is direct and low over the surface of the water, and it can travel at . Landing is awkward; it either crashes into a wave crest or, in calmer water, does a belly flop. While at sea, the Atlantic puffin has its annual moult. Land birds mostly lose their primaries one pair at a time to enable them still to be able to fly, but the puffin sheds all its primaries at one time and dispenses with flight entirely for a month or two. The moult usually takes place between January and March, but young birds may lose their feathers a little later in the year. When fishing, it swims underwater using its semi-extended wings as paddles to "fly" through the water and its feet as a rudder. It swims fast and can reach considerable depths and stay submerged for up to a minute. It can eat shallow-bodied fish as long as , but its prey is commonly smaller fish, around long. An adult bird needs to eat an estimated 40 of these per day – sand eels, herring, capelin, and sprats being the most often consumed. It fishes by sight and can swallow small fish while submerged, but larger specimens are brought to the surface. It can catch several small fish in one dive, holding the first ones in place in its beak with its muscular, grooved tongue while it catches others. The two mandibles are hinged in such a way that they can be held parallel to hold a row of fish in place, and these are also retained by inward-facing serrations on the edges of the beak. It copes with the excess salt that it swallows partly through its kidneys and partly by excretion through specialised salt glands in its nostrils. They congregate for a few days on the sea in small groups offshore before returning to the cliff-top nesting sites. Each large puffin colony is divided into subcolonies by physical boundaries such as stands of bracken or gorse. Early arrivals take control of the best locations, the most desirable nesting sites being the densely packed burrows on grassy slopes just above the cliff edge, where take-off is most easily accomplished. The birds are usually monogamous, but this is the result of their fidelity to their nesting sites rather than to their mates, and they often return to the same burrows year after year. Later arrivals at the colony may find that all the best nesting sites have already been taken, so they are pushed towards the periphery, where they are in greater danger of predation. Younger birds may come ashore a month or more after the mature birds and find no remaining nesting sites. They do not breed until the following year, although if the ground cover surrounding the colony is cut back before these subadults arrive, the number of successfully nesting pairs may be increased. On the Isle of May on the other side of the Atlantic, only five pairs of puffins were breeding in 1958, while 20 years later, 10,000 pairs were present. Egg-laying starts in April in more southerly colonies but seldom occurs before June in Greenland. The female lays a single white egg each year, but if this is lost early in the breeding season, another might be produced. Adults bringing fish to their chicks tend to arrive in groups. This is thought to benefit the bird by reducing kleptoparasitism by the Arctic skua, which harasses puffins until they drop their fish loads. Predation by the great skua (Catharacta skua) is also reduced by several birds arriving simultaneously. In the Shetland Islands, sand eels (Ammodytes marinus) normally form at least 90% of the food fed to chicks. In years when the availability of sand eels was low, breeding success rates fell, with many chicks starving to death. In Norway, the herring (Clupea harengus) is the mainstay of the diet. When herring numbers dwindled, so did puffin numbers. In Labrador, the puffins seemed more flexible and when the staple forage fish capelin (Mallotus villosus) declined in availability, they were able to adapt and feed the chicks on other prey species. The chicks take from 34 to 50 days to fledge, the period depending on the abundance of their food supply. In years of fish shortage, the whole colony may experience a longer fledgling period, but the normal range is 38 to 44 days, by which time chicks have reached about 75% of their mature body weight. The chick may come to the burrow entrance to defecate, but does not usually emerge into the open Although the supply of fish by the adults reduces over the last few days spent in the nest, the chick is not abandoned, as happens in the Manx shearwater. On occasions, an adult has been observed provisioning a nest even after the chick has departed. During the last few days underground, the chick sheds its down and the juvenile plumage is revealed. It's a relatively small beak, and its legs and feet are a dark colour; it lacks the white facial patches of the adult. The chick finally leaves its nest at night, when the risk of predation is at its lowest. When the moment arrives, it emerges from the burrow, usually for the first time, and walks, runs, and flaps its way to the sea. It cannot fly properly yet, so descending a cliff is perilous; when it reaches the water, it paddles out to sea, and maybe away from the shore by daybreak. It does not congregate with others of its kind and does not return to land for 2–3 years. ==Predators and parasites==
Predators and parasites
Atlantic puffins are probably safer when out at sea, where the dangers are more often from below the water rather than above; puffins can sometimes be seen putting their heads underwater to peer around for predators. Seals have been known to kill puffins, and large fish may also do so. Most puffin colonies are on small islands, and this is no coincidence, as it avoids predation by ground-based mammals such as foxes, rats, stoats, weasels, cats, and dogs. When they come ashore, the birds are still at risk and the main threats come from the sky. Where it nests on the tundra in the far north, the Arctic skua (Stercorarius parasiticus) is a terrestrial predator, but at lower latitudes, it is a specialised kleptoparasite, concentrating on auks and other seabirds. It harasses puffins while they are airborne, forcing them to drop their catch, which it then snatches up. Both the guillemot tick Ixodes uriae and the flea Ornithopsylla laetitiae (probably originally a rabbit flea) have been recorded from the nests of puffins. Other fleas found on the birds include Ceratophyllus borealis, Ceratophyllus gallinae, Ceratophyllus garei, Ceratophyllus vagabunda, and the common rabbit flea Spilopsyllus cuniculi. ==Relationship with humans==
Relationship with humans
Status and conservation , County Kerry, Ireland, a dedicated puffin conservation area The Atlantic puffin has an extensive range that covers over and Europe, which holds more than 90% of the global population, is home to 4,770,000–5,780,000 pairs (equalling 9,550,000–11,600,000 adults). In 2015, the International Union for Conservation of Nature upgraded its status from "least concern" to "vulnerable". This was caused by a review that revealed a rapid and ongoing population decline in its European range. On the island of Lundy, the number of puffins decreased from 3,500 pairs in 1939 to 10 pairs in 2000. This was mainly due to the rats that had proliferated on the island and were eating eggs and young chicks. Following the elimination of the rats, populations were expected to recover, and in 2005, a juvenile was seen, believed to be the first chick raised on the island for 30 years. In 2018, BirdLife International reported that the Atlantic puffin was threatened with extinction. Puffin numbers increased considerably in the late 20th century in the North Sea, including on the Isle of May and the Farne Islands, where numbers increased by about 10% per year. In the 2013 breeding season, nearly 40,000 pairs were recorded on the Farne Islands, a slight increase on the 2008 census and on the previous year's poor season, when some of the burrows flooded. This number is dwarfed by the Icelandic colonies with five million pairs breeding, the Atlantic puffin being the most populous bird on the island. In the Westman Islands, where about half Iceland's puffins breed, the birds were almost driven to extinction by overharvesting around 1900 and a 30-year ban on hunting was put in place. When stocks recovered, a different method of harvesting was used, and now hunting is maintained at a sustainable level. Since 2000, a sharp population decline has been seen in Iceland, Norway, the Faroe Islands, and Greenland. Another conservation measure undertaken by the centre is to encourage motorists to check under their cars in late summer before driving off, as young puffins, disoriented by the street lights, may land in the town and take shelter underneath the vehicles. Project Puffin is an effort initiated in 1973 by Stephen W. Kress of the National Audubon Society to restore Atlantic puffins to nesting islands in the Gulf of Maine. Eastern Egg Rock Island in Muscongus Bay, about from Pemaquid Point, had been occupied by nesting puffins until 1885, when the birds disappeared because of overhunting. Counting on the fact that young puffins usually return to breed on the same island where they fledged, a team of biologists and volunteers translocated 10– to 14-day-old nestlings from Great Island in Newfoundland to Eastern Egg Rock. The young were placed into artificial sod burrows and fed with vitamin-fortified fish daily for about one month. Such yearly translocations took place until 1986, with 954 young puffins being moved in total. Each year before fledging, the young were individually tagged. The first adults returned to the island by 1977. Puffin decoys had been installed on the island to fool the puffins into thinking they were part of an established colony. This did not catch on at first, but in 1981, four pairs nested on the island. In 2014, 148 nesting pairs were counted on the island. In addition to demonstrating the feasibility of re-establishing a seabird colony, the project showed the usefulness of using decoys and, eventually, call recordings and mirrors to facilitate such re-establishment. Pollution Since the Atlantic puffin spends its winters on the open ocean, it is susceptible to human actions and catastrophes such as oil spills. Oiled plumage has a reduced ability to insulate and makes the bird more vulnerable to temperature fluctuations and less buoyant in the water. Many birds die, and others, while attempting to remove the oil by preening, ingest and inhale toxins. This leads to inflammation of the airways and gut and, in the longer term, damage to the liver and kidneys. This trauma can contribute to a loss of reproductive success and harm to developing embryos. After the oil tanker shipwreck and oil spill in 1967, few dead puffins were recovered, but the number of puffins breeding in France the following year was reduced to 16% of its previous level. The Atlantic puffin and other pelagic birds are excellent bioindicators of the environment, as they occupy a high trophic level. Heavy metals and other pollutants are concentrated through the food chain, and as fish are the primary food source for Atlantic puffins, the potential is great for them to bioaccumulate heavy metals such as mercury and arsenic. Measurements can be made on eggs, feathers, or internal organs, and beached bird surveys, accompanied by chemical analysis of feathers, can be effective indicators of marine pollution by lipophilic substances, as well as metals. In fact, these surveys can be used to provide evidence of the adverse effects of a particular pollutant, using fingerprinting techniques to provide evidence suitable for the prosecution of offenders. Climate change Climate change may well affect populations of seabirds in the northern Atlantic. The most important demographic may be an increase in the sea surface temperature, which may have benefits for some northern Atlantic puffin colonies. Breeding success depends on ample supplies of food at the time of maximum demand, as the chick grows. In northern Norway, the main food item fed to the chick is the young herring. The success of the newly hatched fish larvae during the previous year was governed by the water temperature, which controlled plankton abundance, and this, in turn, influenced the growth and survival of the first-year herring. The breeding success of Atlantic puffin colonies has been found to correlate in this way with the water surface temperatures of the previous year. In Maine, on the other side of the Atlantic, shifting fish populations due to changes in sea temperature are being blamed for the lack of availability of the herring, which is the staple diet of the puffins in the area. Some adult birds have become emaciated and died. Others have been provisioning the nest with butterfish (Peprilus triacanthus), but these are often too large and deep-bodied for the chick to swallow, causing it to die from starvation. Maine is on the southerly edge of the bird's breeding range, and with changing weather patterns, this may be set to contract northwards. Tourism Breeding colonies of Atlantic puffins provide an interesting spectacle for bird watchers and tourists. For example, 4000 puffins nest each year on islands off the coast of Maine, and visitors can view them from tour boats that operate during the summer. The Project Puffin Visitor Center in Rockland provides information on the birds and their lives, and on the other conservation projects being undertaken by the National Audubon Society, which runs the center. Views of the colony on Seal Island National Wildlife Refuge can be viewed via live cams during the breeding season. Similar tours operate in Iceland, the Hebrides, and Newfoundland. Hunting Historically, Atlantic puffins were caught and eaten fresh, salted in brine, or smoked and dried. Their feathers were used in bedding, and their eggs were eaten, but not to the same extent as those of some other seabirds, being more difficult to extract from the nest. In most countries, Atlantic puffins are now protected by legislation, and in the countries where hunting is still permitted, strict laws prevent overexploitation. Although calls have been made for an outright ban on hunting puffins in Iceland because of concern over the dwindling number of birds successfully raising chicks, they are still caught and eaten there and on the Faroe Islands. Traditional means of capture varied across the birds' range, and nets and rods were used in various ingenious ways. In the Faroe Islands, the method of choice was fleyg, with the use of a fleygingarstong, a 3.6-m-long pole with a small net at the end suspended between two rods, somewhat like a very long lacrosse stick. A few dead puffins were strewn around to entice incoming birds to land, and the net was flicked upwards to scoop a bird from the air as it slowed before alighting. Hunters often positioned themselves on cliff tops in stone seats built in small depressions to conceal themselves from puffins flying overhead. Most of the birds caught were subadults, and a skilled hunter could gather 200–300 in a day. Another method of capture, used in St Kilda, involved the use of a flexible pole with a noose on the end. This was pushed along the ground towards the intended target, which advanced to inspect the noose as its curiosity overcame its caution. A flick of the wrist would flip the noose over the victim's head, and it was promptly killed before its struggles could alarm other birds nearby. In August 2007, the Atlantic puffin was unsuccessfully proposed as the official symbol of the Liberal Party of Canada by its deputy leader Michael Ignatieff, after he observed a colony of these birds and became fascinated by their behaviour. Værøy Municipality in Norway has an Atlantic puffin as its coat of arms. Puffins have been given several informal names including "clowns of the sea" and "sea parrots", and juvenile puffins may be called "pufflings". Several islands have been named after the bird. The island of Lundy in the United Kingdom is reputed to derive its name from the Norse lund-ey or "puffin island". An alternative explanation has been suggested connected with another meaning of the word "lund" referring to a copse or wooded area. The Vikings might have found the island a useful refuge and restocking point after their depredations on the mainland. The island issued its own coins, and in 1929, its own stamps with denominations in "puffins". Other countries and dependencies that have depicted Atlantic puffins on their stamps include Alderney, Canada, the Faroe Islands, France, Gibraltar, Guernsey, Iceland, Ireland, the Isle of Man, Jersey, Norway, Portugal, Russia, Slovenia, St Pierre et Miquelon, and the United Kingdom. The publisher of paperbacks, Penguin Books, introduced a range of books for children under the Puffin Books brand in 1939. At first, these were nonfiction titles, but they were soon followed by a fiction list of well-known authors. The demand was so great that Puffin Book Clubs were introduced in schools to encourage reading, and a children's magazine called Puffin Post was established. A tradition exists on the Icelandic island of Heimaey for the children to rescue young puffins, a fact recorded in Bruce McMillan's photo-illustrated children's book Nights of the Pufflings (1995). The fledglings emerge from the nest and try to make their way to the sea, but sometimes get confused, perhaps by the street lighting, and end up landing in the village. The children collect them and liberate them to the safety of the sea. Due to being a protected species on Skellig Michael, the production team for the Star Wars sequel trilogy resorted to digitally dressing the puffins (and practically and digitally recreating them for other scenes), resulting in the creation of porgs. == See also ==
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