Flamingo

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For other uses, see Flamingo (disambiguation).
"Pink flamingo" redirects here. For the lawn ornament, see Plastic flamingo. For the 1972 film, see Pink Flamingos.
Flamingos
Temporal range: 25–0 Ma
Late Oligocene – Recent
Flamingos Laguna Colorada.jpg
James's flamingos (P. jamesi at Laguna Colorada in Bolivia
Scientific classification e
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Ciconiidae
Family: Phoenicopteridae
Linnaeus, 1758
Genera

see text
Flamingo range.png
Global distribution of flamingos

Flamingos (or flamingoes[1]) are a type of wading bird in the family Phoenicopteridae. There are four flamingo species in the Americas and two species in Afro-Eurasia. Often, they are pink in colour.

Captive flamingos feeding

Etymology[edit]

Flamingo comes from Spanish flamengo,[2][3] 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".[4]

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 family Threskiornithidae or the storks of the family Ciconiidae were considered their closest relatives within this order. Earlier genetic studies, such as those of Charles Sibley and colleagues, also supported this relationship.[5] Relationships to the waterfowl were considered as well,[6] especially as flamingos are parasitized by feather lice of the genus Anaticola, which are otherwise found only on ducks and geese.[7] The peculiar presbyornithids were used to argue for a close relationship between flamingos, waterfowl, and waders,[8] but they are now known to be unequivocal waterfowl.[9]

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] in 2015 the family was reclassified into three genera.

Species Geographic location
Chilean flamingo
(Phoenicopterus chilensis)		 New World Temperate S. South America.
American flamingo
(Phoenicopterus ruber)		 Caribbean islands, Caribbean Mexico, Southern Florida, Belize and the Galápagos Islands.
Greater flamingo
(Phoenicopterus roseus)		 Old World Parts 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).
Andean flamingo
(Phoenicoparrus andinus)		 New World High Andes in Peru, Chile, Bolivia and Argentina.
James's flamingo
(Phoenicoparrus jamesi)		 High Andes in Peru, Chile, Bolivia and Argentina.
A group of flamingo in a small lake inside Serengeti plain. This photo has been taken by Prof. Chen Hualin.

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,[11][12][13] while morphological evidence also strongly supports a relationship between flamingos and grebes. They hold at least eleven 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.[14] The fossil palaelodids can be considered evolutionarily, and ecologically, intermediate between flamingos and grebes.[15]

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.[15]

Description[edit]

The arcuate bill of this American flamingo is well adapted to bottom scooping
Flamingos flying over Namibia

Flamingos often stand on one leg, the other leg tucked beneath the body. The reason for this behaviour is not fully understood. Recent research indicates that standing on one leg may allow the birds to conserve more body heat, given that they spend a significant amount of time wading in cold water.[16] However, the behaviour also takes place in warm water. As well as standing in the water, flamingos may stamp their webbed feet in the mud to stir up food from the bottom.[17]

Young flamingos hatch with greyish reddish 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 and thus a more desirable mate; a white or pale flamingo, however, is usually unhealthy or malnourished. Captive flamingos are a notable exception; many turn a pale pink as they are not fed carotene at levels comparable to the wild.[18]

Blood composition[edit]

Captivity and age have been seen to have an effect on the blood composition of the American flamingo (Phoenicopterus ruber). A decrease in white blood cell numbers was predominate with age in both captive and free living flamingos, but captive flamingos showed a higher white blood cell count than free living flamingos.[19] One exception occurs in free living flamingos with regard to white blood cell count. The number of eosinophils in free living birds are higher because these cells are the ones that fight off parasites which a free living bird may have more contact with than a captive one. Captive birds showed higher hematocrit and red blood cell numbers than the free living flamingos, and a blood hemoglobin increase was seen with age.[19] An increase in hemoglobin would correspond with an adult's increase in metabolic needs. A smaller mean cellular volume recorded in free living flamingos coupled with similar mean hemoglobin content between captive and free living flamingos could show different oxygen diffusion characteristics between these two groups.[19] Plasma chemistry remains relatively stable with age but lower values of protein content, uric acid, cholesterol, triglycerides, and phospholipids were seen in free living flamingos. This trend can be attributed to shortages and variances in food intake in free living flamingos.[19]

Behaviour and ecology[edit]

Feeding[edit]

American flamingo and offspring

Flamingos filter-feed on brine shrimp and blue-green algae. Their beaks 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. These carotenoids are broken down into pigments by liver enzymes.[20] 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 who get it second hand (e.g. from animals that have digested blue-green algae).[21]

Lifecycle[edit]

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.[22] Before breeding, flamingo colonies split into breeding groups of between about 15 and 50 birds. Both males and females in these groups perform synchronized ritual displays.[23] 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.[24] The displays do not seem to be directed towards an individual but instead occur randomly.[24] These displays stimulate "synchronous nesting" (see below) and help pair up those birds who do not already have mates.[23]

Flamingos form strong pair bonds of one male and one female, although in larger colonies flamingos sometimes change mates, presumably because there are more mates to choose from.[25] 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).[24] It is during nest building that copulation usually occurs. Nest building 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.[citation needed]

After the chicks hatch, the only parental expense is feeding.[26] 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 a hormone called 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.)[citation needed]

For the first six days after the chicks hatch, the adults and chicks stay in the nesting sites. At around seven to twelve 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.[27]

Status and conservation[edit]

Flamingos at the Jerusalem Biblical Zoo, Israel
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.[28]

An 83-year-old greater flamingo, believed to be the oldest in the world, died at the Adelaide Zoo in Australia in January, 2014.[29]

Relationship with humans[edit]

Moche Ceramic Depicting Flamingo (200 AD) Larco Museum Collection Lima, Peru

The Old World flamingos were considered by the Ancient Egyptians to be the living representation of the god Ra,[30] while in Ancient Rome, their tongues were considered a delicacy.[31]

In the Americas, the Moche people of ancient Peru worshipped nature.[32] They placed emphasis on animals and often depicted flamingos in their art,[33] while in The Bahamas they are the national bird. Also, Andean miners have killed flamingos for their fat, believed to be a cure for tuberculosis.[34] In the United States, pink plastic flamingo statues are popular lawn ornaments.[35]

References[edit]

  1. ^ Both forms of the plural are attested, according to the Oxford English Dictionary
  2. ^ "Flamenco, RAE". Real Academia Española. Retrieved 18 May 2015. 
  3. ^ "Flamingo, Oxford Dictionary". Oxford Dictionary. Retrieved 18 May 2015. 
  4. ^ "Online Etymology Dictionary". Ohio University. Retrieved 7 March 2015. 
  5. ^ Salzman, Eric (December 1993). "Sibley's Classification of Birds". Ornitologia e dintorni. Retrieved 15 November 2009. 
  6. ^ Sibley, Charles G.; Corbin, Kendall W.; Haavie, Joan H. (1969). "The Relationships of the Flamingos as Indicated by the Egg-White Proteins and Hemoglobins" (PDF). Condor 71 (2): 155–179. doi:10.2307/1366077. JSTOR 1366077. 
  7. ^ Johnson, Kevin P.; Kennedy, Martyn; McCracken, Kevin G. (2006). "Reinterpreting the origins of flamingo lice: cospeciation or host-switching?" (PDF). Biology Letters 2 (2): 275–278. doi:10.1098/rsbl.2005.0427. PMC 1618896. PMID 17148381. Retrieved 31 October 2009. 
  8. ^ Feduccia, Alan (1976). "Osteological evidence for shorebird affinities of the flamingos" (PDF). Auk 93 (3): 587. Retrieved 3 November 2009. 
  9. ^ Kurochkin, E. N.; Dyke, G. J.; Karhu, A. A. (2002). "A New Presbyornithid Bird (Aves, Anseriformes) from the Late Cretaceous of Southern Mongolia". American Museum Novitates 3386: 1–11. doi:10.1206/0003-0082(2002)386<0001:ANPBAA>2.0.CO;2. hdl:2246/2875. 
  10. ^ [1]|Torres et al., A multi-locus inference of the evolutionary diversification of extant flamingos (Phoenicopteridae),BMC Evolutionary Biology 2014, 14:36.
  11. ^ Chubb, AL. 2004. New nuclear evidence for the oldest divergence among neognath birds: the phylogenetic utility of ZENK (i). Molecular Phylogenetics and Evolution, 30(1), 140–151.
  12. ^ Ericson, Per G. P.; Anderson, CL; Britton, T; Elzanowski, A; Johansson, US; Källersjö, M; Ohlson, JI; Parsons, TJ; Zuccon, D (December 2006). "Diversification of Neoaves: integration of molecular sequence data and fossils" (PDF). Biology Letters 2 (4): 543–547. doi:10.1098/rsbl.2006.0523. ISSN 1744-9561. PMC 1834003. PMID 17148284. 
  13. ^ Hackett, Shannon J.; Kimball, Rebecca T.; Reddy, Sushma; Bowie, Rauri C. K.; Braun, Edward L.; Braun, Michael J.; Chojnowski, Jena L.; Cox, W. Andrew; Kin-Lan Han, John (27 June 2008). "A Phylogenomic Study of Birds Reveals Their Evolutionary History". Science 320 (5884): 1763–1768. doi:10.1126/science.1157704. PMID 18583609. 
  14. ^ Mayr, Gerald (2004). "Morphological evidence for sister group relationship between flamingos (Aves: Phoenicopteridae) and grebes (Podicipedidae)" (PDF). Zoological Journal of the Linnean Society 140 (2): 157–169. doi:10.1111/j.1096-3642.2003.00094.x. ISSN 0024-4082. Retrieved 3 November 2009. 
  15. ^ a b Mayr, Gerald (2006). "The contribution of fossils to the reconstruction of the higher-level phylogeny of birds" (PDF). Species, Phylogeny and Evolution 3: 59–64. ISSN 1098-660X. Retrieved 12 August 2009. 
  16. ^ Walker, Matt (13 August 2009). "Why flamingoes stand on one leg". BBC News. Retrieved 9 December 2009. 
  17. ^ BioExpedition. "Flamingo Facts". Flamingos-World. Retrieved 11 August 2015. 
  18. ^ Helmenstine, Anne Marie. "Why Are Flamingos Pink?". About Education. Retrieved 11 August 2015. 
  19. ^ a b c d Puerta, M.L., et al. (1992). Hematological Trends in Flamingos, Phoenicopterus ruber. Comp, Biochem, Physiol. Vol 102A, No. 4, pp. 683-686. Great Britain, Pergamon Press Ltd.
  20. ^ Hill, G. E.; Montgomerie, R.; Inouye, C. Y.; Dale, J. (June 1994). "Influence of Dietary Carotenoids on Plasma and Plumage Colour in the House Finch: Intra- and Intersexual Variation". Functional Ecology (British Ecological Society) 8 (3): 343–350. doi:10.2307/2389827. JSTOR 2389827. 
  21. ^ "NATURE: Fire Bird – Flamingo Facts". Pbs.org. Retrieved 2013-03-30. 
  22. ^ Pickett, C.; Stevens, E. F. (1994). "Managing the Social Environments of Flamingos for Reproductive Success". Zoo Biology 13 (5): 501–507. doi:10.1002/zoo.1430130512. 
  23. ^ a b Ogilvie, Malcolm; Carol Ogilvie (1986). Flamingos. Gloucester, UK: Alan Sutton Publishing Limited. ISBN 9780862992668. OCLC 246861013.
  24. ^ a b c Studer-Thiersch, A. (1975). "Basle Zoo", pp. 121–130 in N. Duplaix-Hall and J. Kear, editors. Flamingos. Berkhamsted, United Kingdom: T. & A. D. Poyser, ISBN 140813750X.
  25. ^ Studer-Thiersch, A. (2000). "What 19 Years of Observation on Captive Great Flamingos Suggests about Adaptations to Breeding under Irregular Conditions." Waterbirds: The International Journal of Waterbird Biology 23 (Special Publication I: Conservation Biology of Flamingos): 150–159.
  26. ^ Cézilly, F.; Johnson, A.; Tourenq, C. (1994). "Variation in Parental Care with Offspring Age in the Greater Flamingo". The Condor 96 (3): 809–812. doi:10.2307/1369487. 
  27. ^ Gaillo, A.; Johnson, A. R.; Gallo, A. (1995). "Adult Aggressiveness and Crèching Behavior in the Greater Flamingo, Phoenicopterus ruber roseus". Colonial Waterbirds 18 (2): 216–221. doi:10.2307/1521484. 
  28. ^ "Zolli feiert 50 Jahre Flamingozucht und Flamingosforschung" [Zolli celebrates 50 years of flamingo breeding and science]. Basler Zeitung (in German). 13 August 2008. Retrieved 21 March 2010. 
  29. ^ Fedorowytsch, Tom (31 January 2014). "Flamingo believed to be world's oldest dies at Adelaide Zoo aged 83". ABC Radio Australia. Retrieved 31 January 2014. 
  30. ^ Flamingos: Phoenicopteriformes – Greater Flamingo (Phoenicopterus ruber): Species Account. animals.jrank.org
  31. ^ "Flamingo Feeding". Stanford University. Retrieved 16 August 2008. 
  32. ^ Benson, Elizabeth (1972) The Mochica: A Culture of Peru. New York, NY: Praeger Press.
  33. ^ Berrin, Katherine; Larco Museum (1997). The Spirit of Ancient Peru:Treasures from the Museo Arqueológico Rafael Larco Herrera. New York: Thames and Hudson. ISBN 0500018022. 
  34. ^ "Flamingos". Seaworld.org. Retrieved 2013-03-30. 
  35. ^ Collins, Clayton (2 November 2006). "Backstory: Extinction of an American icon?". Christian Science Monitor. Retrieved 9 February 2010. 

External links[edit]

Wikispecies has information related to: Phoenicopteridae
Wikimedia Commons has media related to Phoenicopterus.
Flamingos (order: Phoenicopteriformes · family: Phoenicopteridae &middot)
Genus
Birds (class: Aves)
Anatomy
Behaviour
Evolution

Subclass: Neornithes
(41 orders of modern birds)
Infraclass: Palaeognathae
Infraclass: Neognathae
Fossil birds
Human–bird interaction
Lists
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