Flamingo

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For other uses, see Flamingo (disambiguation).
Flamingos
Temporal range: 25–0 Ma 
O
S
D
C
P
T
J
K
N
Late Oligocene – Recent
Flamingos Laguna Colorada.jpg
James's flamingos (P. jamesi)
Scientific classificatione
Kingdom:Animalia
Phylum:Chordata
Class:Aves
Order:Phoenicopteriformes
Family:Phoenicopteridae
Bonaparte, 1831
Species
See text
Flamingo range.png
Global distribution of flamingos
Flamingos or flamingoes[1] /fləˈmɪŋɡoʊz/ are a type of wading bird in the family Phoenicopteridae, the only bird family in the order Phoenicopteriformes. Four flamingo species are in the Americas and two species are in the Old World.

Etymology[edit]

File:Greaterflamingo-uenozoo2008.ogv
Captive greater flamingos feeding
The name "flamingo" comes from Portuguese or Spanish flamengo, "flame-colored", in turn coming from Provençal flamenc from flama "flame" and Germanic-like suffix -ing, with a possible influence of words like "Fleming". A similar etymology has the Latinate Greek term phoenicopterus (from Greek: φοινικόπτερος phoinikopteros), literally "blood red-feathered".[2]

Taxonomy and systematics[edit]

Traditionally, the long-legged Ciconiiformes, probably a paraphyletic assemblage, have been considered the flamingos' closest relatives and the family was included in the order. Usually, the ibises and spoonbills of the Threskiornithidae were considered their closest relatives within this order. Earlier genetic studies, such as those of Charles Sibley and colleagues, also supported this relationship.[3] Relationships to the waterfowl were considered as well,[4] especially as flamingos are parasitized by feather lice of the genus Anaticola, which are otherwise exclusively found on ducks and geese.[5] The peculiar presbyornithids were used to argue for a close relationship between flamingos, waterfowl, and waders.[6] A 2002 paper concluded they are waterfowl,[7] but a 2014 comprehensive study of bird orders found that flamingos and grebes are not waterfowl, but rather are part of Columbea along with doves, sandgrouse, and mesites.[8]

Phylogeny[edit]

Living flamingoes.[9]

Phoenicopterus

Phoenicopterus chilensis (Chilean flamingo)



Phoenicopterus roseus (Greater flamingo)


Phoenicopterus ruber (American flamingo)





Phoeniconaias minor (Lesser flamingo)

Phoenicoparrus

Phoenicoparrus andinus (Andean flamingo)


Phoenicoparrus jamesi (James's flamingo)




Species[edit]

Six extant flamingo species are recognized by most sources, and were formerly placed in one genus – Phoenicopterus. As a result of a 2014 publication,[10] the family was reclassified into three genera.[11]
SpeciesGeographic location
Greater flamingo
(Phoenicopterus roseus)		Old WorldParts of Africa, S. Europe and S. and SW Asia (most widespread flamingo).
Lesser flamingo
(Phoeniconaias minor)		Africa (e.g. Great Rift Valley) to NW India (most numerous flamingo).
Chilean flamingo
(Phoenicopterus chilensis)		New WorldTemperate S. South America.
James's flamingo
(Phoenicoparrus jamesi)		High Andes in Peru, Chile, Bolivia and Argentina.
Andean flamingo
(Phoenicoparrus andinus)		High Andes in Peru, Chile, Bolivia and Argentina.
American flamingo
(Phoenicopterus ruber)		Caribbean islands, Caribbean Mexico, Belize, Venezuela, and Galápagos Islands.
P. croizeti fossil

Relationship with grebes[edit]

Many molecular and morphological studies support a relationship between grebes and flamingos.
Recent molecular studies have suggested a relation with grebes,[12][13][14] while morphological evidence also strongly supports a relationship between flamingos and grebes. They hold at least 11 morphological traits in common, which are not found in other birds. Many of these characteristics have been previously identified on flamingos, but not on grebes.[15] The fossil palaelodids can be considered evolutionarily, and ecologically, intermediate between flamingos and grebes.[16]
For the grebe-flamingo clade, the taxon Mirandornithes ("miraculous birds" due to their extreme divergence and apomorphies) has been proposed. Alternatively, they could be placed in one order, with Phoenocopteriformes taking priority.[16]

Description[edit]

Flamingos usually stand on one leg while the other is tucked beneath their bodies. The reason for this behaviour is not fully understood. One theory is that standing on one leg allows the birds to conserve more body heat, given that they spend a significant amount of time wading in cold water.[17] However, the behaviour also takes place in warm water and is also observed in birds that do not typically stand in water. An alternative theory is that standing on one leg reduces the energy expenditure for producing muscular effort to stand and balance on one leg. A study on cadavers showed that the one-legged pose could be held without any muscle activity, while living flamingos demonstrate substantially less body sway in a one-legged posture.[18] As well as standing in the water, flamingos may stamp their webbed feet in the mud to stir up food from the bottom.[19]
Flamingos are capable flyers, and flamingos in captivity often require wing clipping to prevent escape.
Flamingos in flight at Rio Lagartos, Yucatán, Mexico
Young flamingos hatch with greyish-red plumage, but adults range from light pink to bright red due to aqueous bacteria and beta-carotene obtained from their food supply. A well-fed, healthy flamingo is more vibrantly colored, thus a more desirable mate; a white or pale flamingo, however, is usually unhealthy or malnourished. Captive flamingos are a notable exception; they may turn a pale pink if they are not fed carotene at levels comparable to the wild.[20]
The greater flamingo is the tallest of the 6 different species of flamingos, standing at 3.9 to 4.7 feet with a weight up to 7.7 pounds, and the shortest flamingo species (the lesser) has a height of 2.6 feet and weighs 5.5 pounds. Flamingos can have a wingspan as small as 37 inches to as big as 59 inches.[21]

Behaviour and ecology[edit]

Feeding[edit]

American flamingo and offspring: The arcuate (curved) bill is well adapted to bottom scooping.
Flamingos filter-feed on brine shrimp and blue-green algae as well as larva, small insects, mollusks and crustaceans making them omnivores. Their bills are specially adapted to separate mud and silt from the food they eat, and are uniquely used upside-down. The filtering of food items is assisted by hairy structures called lamellae, which line the mandibles, and the large, rough-surfaced tongue. The pink or reddish color of flamingos comes from carotenoids in their diet of animal and plant plankton. American flamingos are a brighter red color because of the beta carotene availability in their food while the lesser flamingos are a paler pink due to ingesting a smaller amount of this pigment (39). These carotenoids are broken down into pigments by liver enzymes.[22] The source of this varies by species, and affects the saturation of color. Flamingos whose sole diet is blue-green algae are darker in color compared to those which get it second-hand (e.g. from animals that have digested blue-green algae).[23]

Lifecycle[edit]

Chilean flamingo feeding its young
Colony of flamingos at Lake Nakuru
Flamingos are very social birds; they live in colonies whose population can number in the thousands. These large colonies are believed to serve three purposes for the flamingos: avoiding predators, maximizing food intake, and using scarce suitable nesting sites more efficiently.[24] Before breeding, flamingo colonies split into breeding groups of about 15 to 50 birds. Both males and females in these groups perform synchronized ritual displays.[25] The members of a group stand together and display to each other by stretching their necks upwards, then uttering calls while head-flagging, and then flapping their wings.[26] The displays do not seem to be directed towards an individual, but instead occur randomly.[26] These displays stimulate "synchronous nesting" (see below) and help pair up those birds that do not already have mates.[25]
Flamingos form strong pair bonds, although in larger colonies, flamingos sometimes change mates, presumably because more mates are available to choose.[27] Flamingo pairs establish and defend nesting territories. They locate a suitable spot on the mudflat to build a nest (the spot is usually chosen by the female).[26] Copulation usually occurs during nest building, which is sometimes interrupted by another flamingo pair trying to commandeer the nesting site for their own use. Flamingos aggressively defend their nesting sites. Both the male and the female contribute to building the nest, and to defending the nest and egg.[28]Occasional same-sex pairs have been reported.[29]
After the chicks hatch, the only parental expense is feeding.[30] Both the male and the female feed their chicks with a kind of crop milk, produced in glands lining the whole of the upper digestive tract (not just the crop). Production is stimulated by the hormone prolactin. The milk contains fat, protein, and red and white blood cells. (Pigeons and doves—Columbidae—also produce a crop milk (just in the glands lining the crop), which contains less fat and more protein than flamingo crop milk.)[31]
For the first six days after the chicks hatch, the adults and chicks stay in the nesting sites. At around 7–12 days old, the chicks begin to move out of their nests and explore their surroundings. When they are two weeks old, the chicks congregate in groups, called "microcrèches", and their parents leave them alone. After a while, the microcrèches merge into "crèches" containing thousands of chicks. Chicks that do not stay in their crèches are vulnerable to predators.[32]

Status and conservation[edit]

See also: List of Phoenicopteriformes by population

In captivity[edit]

The first flamingo hatched in a European zoo was a Chilean flamingo at Zoo Basel in Switzerland in 1958. Since then, over 389 flamingos have grown up in Basel and been distributed to other zoos around the globe.[33]
Greater, an at least 83-year-old greater flamingo, believed to be the oldest in the world, died at the Adelaide Zoo in Australia in January, 2014.[34]

Relationship with humans[edit]

Moche ceramic depicting flamingo (200 AD) Larco Museum Collection, Lima, Peru
  • In Ancient Rome, their tongues were considered a delicacy.[35]
  • In the Americas, the Moche people of ancient Peru worshipped nature.[36] They placed emphasis on animals and often depicted flamingos in their art.[37]
  • In the Bahamas, they are the national bird.
  • Andean miners have killed flamingos for their fat, believed to be a cure for tuberculosis.[38]
  • In the United States, pink plastic flamingo statues were popular lawn ornaments.[39]

References[edit]

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External links[edit]