Condor | |
---|---|
Andean condor soaring over southern Peru's Colca Canyon | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Aves |
Order: | Cathartiformes |
Family: | Cathartidae |
Genera | |
Condor is the common name for two species of New World vultures, each in a monotypic genus. The name derives from the Quechua kuntur. [1] [2] They are the largest flying land birds in the Western Hemisphere.
One species, the Andean condor (Vultur gryphus), inhabits the Andean mountains. The other, the California condor (Gymnogyps californianus), is currently restricted to the western coastal mountains of the contiguous United States and Mexico, as well as the northern desert mountains of Arizona.
Condors are part of the family Cathartidae, which contains the New World vultures, whereas the 15 species of Old World vultures are in the family Accipitridae, which also includes hawks, eagles, and kites. The New World and Old World vultures evolved from different ancestors. They both are carrion-eaters and the two groups are similar in appearance due to convergent evolution.
Condors are very large, broad-winged soaring birds, the Andean condor being 3 inches (7.6 centimetres) to 6 inches (15.2 centimetres) shorter (beak to tail) on average than the northern species, but heavier and larger in wingspan. [3] The Andean condor has a wingspan of 2.7–3.1 metres (8 feet 10+1⁄2 inches – 10 feet 2 inches) [4] and even up to about 3.20 metres (10 ft 6 in) and a weight of 8–15 kg, [3] with males ranging from to 11 to 15 kg (24 to 33 lb) and females 7.5 to 11 kg (17 to 24 lb). [5] Meanwhile the California condor has a weight of 8–14 kg and wingspan of about 109 inches, or 2.77 meters. [3] California condors are North America's largest flying land birds. [3] Among all living flying birds, the Andean condor is the third heaviest after the Kori bustard and great bustard (up to 21 kg or 46 lb), and second only to the wandering albatross (up to 3.5 m or 11 ft 6 in) in wingspan. [6] [7] Measurements are usually taken from specimens reared in captivity. [4]
The adult plumage is uniformly black, except for a frill of white feathers nearly surrounding the base of the neck, which are meticulously kept clean by the bird. As an adaptation for hygiene, the condor's head and neck have few feathers, which exposes the skin to the sterilizing effects of dehydration and solar ultraviolet light at high altitudes. The head is much flattened above. In the male, it is crowned with a caruncle or comb, while the skin of the neck lies in folds, forming a wattle. The head and neck skin can flush noticeably in response to the emotional state and transmitted between individuals. [4] In Andean Condors, specifically males, there is typically an extra group of skin, much like that of a turkey. Alternatively, Andean Condors often have a white feather collar at the base of their head. Most California Condors are without an extra plumage and display a longer neck than that of the Andean.
The middle toe is greatly elongated, the hind one is slightly developed, and the nails of all the toes are comparatively straight and blunt. The feet are thus more adapted to walking (as in their closely related storks) and of little use as weapons or organs of prehension (as in birds of prey and Old World vultures). Contrary to the usual rule among birds of prey, the female is smaller than the male. [4]
California condors' skin on the neck varies in color, depending on the age of the birds. During the breeding season, adult birds' skin color can be cream, pink, yellow, or orange. [4] Most commonly, Andean tend to utilize white or black skin tones, while the California Condor leans towards pink.
Fossils of both extinct and extant condor species from the Pleistocene era have been found in various parts of North America, including New York and Florida, leading scientists to hypothesize that California condors (as well as their ancestors and relatives) once lived on the west coast of North America as well as to the eastern coast, until their eventual extinction/extirpation. Some scientists also have found that an ancient relative of the condor, Argentavis magnificens from South America, may have been the largest flying bird ever with a wingspan of up to twenty-four feet. [8]
Sexual maturity and breeding behavior do not appear in the condor until 5 or 6 years of age. Condors are monogamous creatures and will mate for life. They may live for 50 years or more and the world's oldest condor died at 100 in the Jardin d'Essai du Hamma in Algiers. [9] Condors nest with one chick at a time, laying one egg every year to year and a half. Due to their size, condors require lots of care and nutrition very early on in their chick stage. [10]
These birds tend to be more social than other birds of prey. They often clump in smaller groups and socialize and rest together. They will often revisit the same locations for daily activities and seasonal roosts.
The young are covered with a grayish down until they are almost as large as their parents. They can fly after six months but continue to roost and hunt with their parents until age two, when they are displaced by a new clutch. There is a well-developed social structure within large groups of condors; a recent study showed the 'pecking order' is determined by age group and, within age groups, by sex (which contradicts previous findings). [11] [12]
The lack of a large sternum to anchor correspondingly large flight muscles identifies it physiologically as a primary soarer. The birds flap their wings on rising from the ground, but after attaining a moderate elevation, they seem to sail on the air, transiting from one upstream to the next, often without flapping their wings. One Andean condor was recording maintaining such flight for 171 kilometers (106 mi), for over five hours. [13] Because of their size, these birds tend to rely on strong thermal currents to propel them higher into wind currents. [14]
Wild condors inhabit large territories, often traveling 250 km (160 mi) a day in search of carrion. With such a large wingspan these birds can sometimes can get by with one single wing flap over an hour. [15] They prefer large carcasses, such as deer or cattle, which they spot by looking for other scavengers. However, these rival species cannot rip through the tougher hides of these larger animals with the efficiency of a larger condor. In the wild, they are intermittent eaters, often going for a few days without eating, then gorging themselves on several kilograms (pounds) at once, sometimes to the point of being unable to lift off the ground.[ citation needed ]
Each condor inhabits a very different set of locations. The Andean condor naturally resides in South America, particularly the Western Coast. They range from the entirety of the coast but tend to live towards the Andes and Patagonia mountain chains. California Condor make up a different global location. As the name implies, these condors tend to live in California and the Southwest United States. Occasionally, the California Condor will take up residence in Northwest Mexico. Both species tend to prefer high altitudes, roughly 16,000 feet, for habitat creation. Most commonly these species will reside on the caves or cliffsides of mountains at this altitude range. Occasionally, California condors will also nest in large redwood tree cavities. [16] Condors instinctively choose locations that naturally protect their young from predators, like Golden eagles, given the elevation and isolation. A unique component of Andean condor habitat is there lack of physical nesting and will likely continue using the same location for many years. [17] California condors tend to only occasionally nest in the same place but will continue to come back to the same geographic area. [16]
Both species of condor have significant threats facing their livelihood. The IUCN defines the Andean Condor as a near threatened species, while the California Condor is considered endangered despite recovery programs. [18] Human threats are currently the more dire to both species. Andean Condors tend to be purposefully shot or poisoned because of prejudice or assumed connections between condors and eating cattle. Another threat to Andean condors is local belief in medicinal properties in the bones and organs of the birds, leading to hunting. [19] Human threats are more indirect to California condors, human use of lead in bullets and other items, have become an unintentional part of the condor diet, leading to a dramatic drop in their population over the years. Currently, California has instated a breeding program to aid in recovery, and all the current wild condors from a subset of twenty-two bred in captivity. [20] Such efforts have lead to a rise to much higher numbers for the birds. In South America similar programs have begun for the Andean Condor but its success is not as vital to maintain population numbers. [10]
The Moche people of ancient Peru worshiped nature. [21] They emphasized animals and often depicted condors in their art. [22] In Andean mythology, the Andean condor was representative of a sun deity, and often was perceived as ruling part of the higher world. Even now the bird continues to be considered a symbol of power and health. [19]
A vulture is a bird of prey that scavenges on carrion. There are 23 extant species of vulture. Old World vultures include 16 living species native to Europe, Africa, and Asia; New World vultures are restricted to North and South America and consist of seven identified species, all belonging to the Cathartidae family. A particular characteristic of many vultures is a bald, unfeathered head. This bare skin is thought to keep the head clean when feeding, and also plays an important role in thermoregulation.
Cathartidae, known commonly as New World vultures or condors, are a family of birds of prey consisting of seven extant species in five genera. It includes five extant vultures and two extant condors found in the Americas. They are known as "New World" vultures to distinguish them from Old World vultures, with which the Cathartidae does not form a single clade despite the two being similar in appearance and behavior as a result of convergent evolution.
The turkey vulture is the most widespread of the New World vultures. One of three species in the genus Cathartes of the family Cathartidae, the turkey vulture ranges from southern Canada to the southernmost tip of South America. It inhabits a variety of open and semi-open areas, including subtropical forests, shrublands, pastures, and deserts.
The black vulture, also known as the American black vulture, Mexican vulture, zopilote, urubu, or gallinazo, is a bird in the New World vulture family whose range extends from the southeastern United States to Perú, Central Chile and Uruguay in South America. Although a common and widespread species, it has a somewhat more restricted distribution than its compatriot, the turkey vulture, which breeds well into Canada and all the way south to Tierra del Fuego. It is the only extant member of the genus Coragyps, which is in the family Cathartidae. Despite the similar name and appearance, this species is not closely related to the Eurasian black vulture, an Old World vulture, of the family Accipitridae. For ease of locating animal corpses, black vultures tend to inhabit relatively open areas with scattered trees, such as chaparral, in addition to subtropical forested areas and parts of the Brazilian pantanal.
The cinereous vulture is a large raptor in the family Accipitridae and distributed through much of temperate Eurasia. It is also known as the black vulture, monk vulture and Eurasian black vulture. With a body length of 1.2 m, 3.1 m (10 ft) across the wings and a maximum weight of 14 kg (31 lb), it is the largest Old World vulture and largest member of the Accipitridae family.
The marabou stork is a large wading bird in the stork family Ciconiidae native to sub-Saharan Africa. It breeds in both wet and arid habitats, often near human habitation, especially landfill sites. It is sometimes called the "undertaker bird" due to its shape from behind: cloak-like wings and back, skinny white legs, and sometimes a large white mass of "hair". It has often been credited with the largest wingspan of any land bird, with an average of 2.6 metres (8.5 ft) and some recorded examples of up to 3.2 metres (10 ft).
The California condor is a New World vulture and the largest North American land bird. It became extinct in the wild in 1987 when all remaining wild individuals were captured, but has since been reintroduced to northern Arizona and southern Utah, the coastal mountains of California, and northern Baja California in Mexico. It is the only surviving member of the genus Gymnogyps, although four extinct members of the genus are also known. The species is listed by the International Union for the Conservation of Nature as Critically Endangered, and similarly considered Critically Imperiled by NatureServe.
The Andean condor is a South American New World vulture and is the only member of the genus Vultur. It is found in the Andes mountains and adjacent Pacific coasts of western South America. With a maximum wingspan of 3.3 m and weight of 15 kg (33 lb), the Andean condor is one of the largest flying birds in the world, and is generally considered to be the largest bird of prey in the world.
The Dalmatian pelican is the largest member of the pelican family, and perhaps the world's largest freshwater bird, although rivaled in weight and length by the largest swans. They are elegant soaring birds, with wingspans rivaling those of the great albatrosses, and their flocks fly in graceful synchrony. With a range spanning across much of Central Eurasia, from the Eastern Mediterranean in the West to the Taiwan Strait in the East, and from the Persian Gulf in the South to Siberia in the North, it is a short-to-medium-distance migrant between breeding and overwintering areas. No subspecies are known to exist over its wide range, but based on size differences, a Pleistocene paleosubspecies, P. c. palaeocrispus, has been described from fossils recovered at Binagady, Azerbaijan.
The king vulture is a large bird found in Central and South America. It is a member of the New World vulture family Cathartidae. This vulture lives predominantly in tropical lowland forests stretching from southern Mexico to northern Argentina. It is the only surviving member of the genus Sarcoramphus, although fossil members are known.
James's flamingo, also known as the puna flamingo, is a species of flamingo that lives at high altitudes in the Andean plateaus of Peru, Chile, Bolivia, and northwest Argentina.
Argentavis is an extinct genus of teratornithid known from three sites in the Epecuén and Andalhualá Formations in central and northwestern Argentina dating to the Late Miocene (Huayquerian). The type species, A. magnificens, is sometimes called the giant teratorn. Argentavis was among the largest flying birds to ever exist, holding the record for heaviest flying bird, although it was surpassed in wingspan after the 2014 description of Pelagornis sandersi, which is estimated to have possessed wings some 20% longer than those of Argentavis.
The Andean cock-of-the-rock, also known as tunki (Quechua), is a large passerine bird of the cotinga family native to Andean cloud forests in South America. It is the national bird of Peru. It has four subspecies and its closest relative is the Guianan cock-of-the-rock.
Teratornis was a genus of huge North American birds of prey—the best-known of the teratorns—of which, two species are known to have existed: Teratornis merriami and Teratornis woodburnensis. A large number of fossil and subfossil bones, representing more than 100 individuals, have been found in locations in California, Oregon, southern Nevada, Arizona, and Florida, though most are from the Californian La Brea Tar Pits. All remains except one Early Pleistocene partial skeleton from the Leisey Shell Pit near Charlotte Harbor, Florida date from the Late Pleistocene, with the youngest remains dating from the Pleistocene–Holocene boundary.
The Cathartiformes order of scavenging birds includes the New World vultures and the now-extinct Teratornithidae. Unlike many Old World vultures, this group of birds lack talons and musculature in their feet suitable to seize prey. In the past, they were considered to be a sister group to the storks of the order Ciconiiformes based on DNA–DNA hybridization and morphology. However, a 2021 analysis of mitochondrial genes suggested a stronger phylogenetic relationship between Cathartiformes and subfamilies of Accipitriformes.
The lesser yellow-headed vulture also known as the savannah vulture, is a species of bird in the New World vulture family Cathartidae. It was considered to be the same species as the greater yellow-headed vulture until they were split in 1964. It is found in Mexico, Central America, and South America in seasonally wet or flooded lowland grassland, swamps, and heavily degraded former forest. It is a large bird, with a wingspan of 150–165 cm (59–65 in). The body plumage is black, and the head and neck, which are featherless, are pale orange with red or blue areas. It lacks a syrinx, so therefore its vocalizations are limited to grunts or low hisses.
The greater yellow-headed vulture, also known as the forest vulture, is a species of bird in the New World vulture family Cathartidae. It was considered to be the same species as the lesser yellow-headed vulture until they were split in 1964. It is found in South America in tropical moist lowland forests. It is a fairly large bird, with a wingspan of 166–178 cm (65–70 in), a weight of 1.65 kilograms (3.6 lb) and a body length of 64–75 cm (25–30 in). The body plumage is black, and the head and neck, which are featherless, range in color from deep yellow to pale orange. It lacks a syrinx, and its vocalizations are therefore limited to grunts or low hisses.
A vulture restaurant is a site where carrion, decaying flesh from dead animals, is deposited in order to be consumed by vultures, and is sometimes referred to more generally as supplemental feeding or provisioning. These stations can also be referred to as vulture feeding sites, vulture feeding stations, and vulture safe zones. This supplemental feeding practice is used to provide vultures with reliable, non-contaminated food sources or to aid in monitoring schemes. Vulture restaurants have been instituted as a method of vulture conservation in Europe and Africa since the 1960's and 70's, when vulture populations began to decline. This strategy is used because often population declines are attributed to low food availability, food contamination or insufficient nutritional quality, or feeding from human areas leading to conflict. Notably, large vulture population declines in South Asia, referred to as the Asian or Indian vulture crisis, and Africa, referred to as the African vulture crisis, have brought renewed attention to the uses and impacts of vulture restaurants. Vulture restaurants are used in Asia, Africa, Europe, and North America for various conservation and management plans. They can help combat food-derived threats to vultures, such as diclofenac or lead contamination or conflict with ranchers and poachers. The first vulture restaurant was built in South Africa in 1966. Vulture restaurants operate in a number of countries, including Nepal, India, Cambodia, South Africa, Eswatini, and Spain.
G. californianus may refer to:
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