Atlantic Puffin

The Atlantic puffin (Fratercula arctica), 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 vulnerab...

Iceland

The Atlantic puffin diet consists almost entirely of fish, though examination of its stomach contents shows that it occasionally eats shrimp, other crustaceans, molluscs, and polychaete worms, especially in more coastal waters. 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 18 cm (7 in), but its prey is commonly smaller fish, around 7 cm (3 in) 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.

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.

Having spent the winter alone on the ocean, whether the Atlantic puffin meets its previous partner offshore or whether they encounter each other when they return to their nest of the previous year is unclear. On land, they soon set about improving and clearing out the burrow. Often, one stands outside the entrance while the other excavates, kicking out quantities of soil and grit that shower the partner standing outside. Some birds collect stems and fragments of dry grasses as nesting materials, but others do not bother. Sometimes, a beakful of materials is taken underground, only to be brought out again and discarded. Apart from nest-building, the other way in which the birds restore their bond is by billing. This is a practice in which the pair approaches each other, each wagging their heads from side to side, and then rattling their beaks together. This seems to be an important element of their courtship behaviour because it happens repeatedly, and the birds continue to the bill, to a lesser extent, throughout the breeding season. Atlantic puffins are sexually mature at 4–5 years old. They are colonial nesters, excavating burrows on grassy clifftops or reusing existing holes, and on occasion may nest in crevices and among rocks and scree, in competition with other birds and animals for burrows. They can excavate their own hole or move into a pre-existing system dug by a rabbit, and have been known to peck and drive off the original occupant. Manx shearwaters also nest underground and often live in their own burrows alongside puffins, and their burrowing activities may break through into the puffin's living quarters, resulting in the loss of the egg. They are monogamous (mate for life) and give biparental care to their young. The male spends more time guarding and maintaining the nest, while the female is more involved in incubation and feeding the chick. 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. Synchronous laying of eggs is found in Atlantic puffins in adjacent burrows. The egg is large compared to the size of the bird, averaging 61 mm (2+3⁄8 in) long by 42 mm (1+5⁄8 in) wide and weighing about 62 g (2+3⁄16 oz). The white shell is usually devoid of markings, but soon becomes covered with mud. The incubation responsibilities are shared by both parents. They each have two feather-free brood patches on their undersides, where an enhanced blood supply provides heat for the egg. The parent on incubation duty in the dark nest chamber spends much of its time asleep with its head tucked under its wing, occasionally emerging from the tunnel to flap dust out of its feathers or take a short flight down to the sea. The total incubation time is around 39–45 days. From above-ground level, the first evidence that hatching has taken place is the arrival of an adult with a beak-load of fish. For the first few days, the chick may be fed with this beak-to-beak, but later the fish are simply dropped on the floor of the nest beside the chick, which swallows them whole. The chick is covered in fluffy black down, its eyes are open, and it can stand as soon as it is hatched. Initially weighing about 42 g (1+1⁄2 oz), it grows at the rate of 10 g (3⁄8 oz) per day. Initially, one or the other parent broods it, but as its appetite increases, it is left alone for longer periods. Observations of a nest chamber have been made from an underground hide with a peephole. The chick sleeps much of the time between its parents' visits and also engages in bouts of exercise. It rearranges its nesting material, picks up and drops small stones, flaps its immature wings, pulls at protruding root ends, and pushes and strains against the unyielding wall of the burrow. It makes its way towards the entrance or along a side tunnel to defecate. The growing chick seems to anticipate the arrival…

The Atlantic puffin is sturdily built with a thick-set neck and short wings and tail. It is 28 to 30 cm (11 to 12 in) in length from the tip of its stout bill to its blunt-ended tail. Its wingspan is 47 to 63 cm (19 to 25 in) and on land it stands about 20 cm (8 in) 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. The beak is very distinctive. From the side, the beak is broad and triangular, but viewed from above, it is narrow. The half near the tip is orange-red, and the half near the head is slate grey. A yellow, chevron-shaped ridge separates the two parts, with a yellow, fleshy strip at the base of the bill. At the joint of the two mandibles is a yellow, wrinkled rosette. The exact proportions of the beak vary with the age of the bird. In an immature individual, the beak has reached its full length, but it is not as broad as that of an adult. With time, the bill deepens, the upper edge curves, and a kink develops at its base. As the bird ages, one or more grooves may form on the red portion. The bird has a powerful bite. The characteristic bright orange bill plates and other facial characteristics develop in the spring. At the close of the breeding season, these special coatings and appendages are shed in a partial moult. 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. The Atlantic puffin has a direct flight, typically 10 m (35 ft) above the sea surface and higher over the water than most other auks. It mostly moves by paddling along efficiently with its webbed feet and seldom takes to the air. It is typically silent at sea, except for the soft purring sounds it sometimes makes in flight. At the breeding colony, it is quiet above ground, but in its burrow makes a growling sound somewhat resembling a chainsaw being revved up.

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. Aerial predators of the Atlantic puffin include the great black-backed gull (Larus marinus), the great skua (Stercorarius skua), and similar-sized species, which can catch a bird in flight, or attack one that is unable to escape fast enough on the ground. On detecting danger, puffins take off and fly down to the safety of the sea or retreat into their burrows, but if caught, they defend themselves vigorously with beaks and sharp claws. When the puffins are wheeling around beside the cliffs, a predator concentrating on a single bird becomes very difficult, while any individual isolated on the ground is at greater risk. Smaller gull species such as the herring gull (L. argentatus) and the lesser black-backed gull are hardly able to bring down a healthy adult puffin. They stride through the colony, taking any eggs that have rolled towards burrow entrances or recently hatched chicks that have ventured too far toward the daylight. They also steal fish from puffins returning to feed their young. 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.

The Atlantic puffin has an extensive range that covers over 1,620,000 km2 (625,000 sq mi) 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. Trends elsewhere are unknown, although, in 2018, the total global population was estimated at 12–14 million adult individuals. Some of the causes of population decline may be increased predation by gulls and skuas, the introduction of rats, cats, dogs, and foxes onto some islands used for nesting, contamination by toxic residues, drowning in fishing nets, declining food supplies, and climate change. 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. Nevertheless, a further hunting ban covering the whole of Iceland was called for in 2011, although the puffin's lack of recent breeding success was being blamed on a diminution in food supply rather than overharvesting. Since 2000, a sharp population decline has been seen in Iceland, Norway, the Faroe Islands, and Greenland. A similar trend has been seen in the United Kingdom, where an increase in 1969–2000 appears to have been reversed. For example, the Fair Isle colony was estimated at 20,200 individuals in 1986, but it had been almost halved by 2012. Based on current trends, the European population will decline an estimated 50–79% between 2000 and 2065. However, there are more than 43,000 puffins on the island of Skomer, off the coast of Pembrokeshire in west Wales, making it one of the most important puffin colonies in Britain; their numbers have been increasing year on year since the elimination of predators on the island. SOS Puffin is a conservation project at the Scottish Seabird Centre at North Berwick to save the puffins on islands in the Firth of Forth. Puffin numbers on the island of Craigleith, once one of the largest colonies in Scotland with 28,000 pairs, have declined dramatically to just a few thousand due to the invasion of a large introduced plant, the tree mallow (Lavatera arborea). This has spread across the island in dense thickets and prevents the puffins from finding suitable sites for burrowing and breeding. The project has the support of over 700 volunteers, and progress has been made in cutting back the plants, with puffins returning in greater numbers to breed. 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…

The Atlantic puffin is the official bird symbol of the province of Newfoundland and Labrador, Canada. 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 was not allowed to disturb the puffins during filming, forcing them to keep the birds in frame. They instead resorted to digitally dressing the puffins (and practically and digitally recreating them for other scenes), resulting in the creation of porgs.