Physical Description

Diagnostic Description

Description

Size: medium to large. Plumage: with lanceolate crest and scapular plumes.
  • Brown, L.H., E.K. Urban & K. Newman (1982). The Birds of Africa, Volume I. Academic Press, London.
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© WoRMS for SMEBD

Source: World Register of Marine Species

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Ecology

Habitat

Depth range based on 8556 specimens in 9 taxa.
Water temperature and chemistry ranges based on 3 samples.

Environmental ranges
  Depth range (m): 0 - 0
  Temperature range (°C): 9.408 - 15.833
  Nitrate (umol/L): 0.361 - 7.234
  Salinity (PPS): 6.428 - 34.717
  Oxygen (ml/l): 5.746 - 7.967
  Phosphate (umol/l): 0.273 - 0.562
  Silicate (umol/l): 2.546 - 9.916

Graphical representation

Temperature range (°C): 9.408 - 15.833

Nitrate (umol/L): 0.361 - 7.234

Salinity (PPS): 6.428 - 34.717

Oxygen (ml/l): 5.746 - 7.967

Phosphate (umol/l): 0.273 - 0.562

Silicate (umol/l): 2.546 - 9.916
 
Note: this information has not been validated. Check this *note*. Your feedback is most welcome.

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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage

Barcode of Life Data Systems (BOLD) Stats
                                        
Specimen Records:102Public Records:49
Specimens with Sequences:83Public Species:5
Specimens with Barcodes:83Public BINs:7
Species:9         
Species With Barcodes:9         
          
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© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

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Barcode data

Creative Commons Attribution 3.0 (CC BY 3.0)

© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

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Locations of barcode samples

Collection Sites: world map showing specimen collection locations for Ardea

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© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

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Wikipedia

Ardea (genus)

"Megalornis" redirects here. This name was also (invalidly) given to the pseudotooth bird genus Dasornis by Harry Govier Seeley and proposed (but not adopted) for the moa genus Dinornis by Richard Owen.
The great egret (Ardea alba, left) resembles the other Ardea in habitus, and the little egret (Egretta garzetta, right) only in color.

Ardea is a genus of herons. Linnaeus named this genus as the great herons, referring to the generally large size of these birds, typically 80–100 cm or more in length.

These large herons are associated with wetlands where they prey on fish, frogs, and other aquatic species.

Most members of this almost worldwide group breed colonially in trees, building large stick nests. Northern species such as great blue, grey and purple herons may migrate south in winter, although the first two do so only from areas where the waters freeze.

These are powerful birds with large spear-like bills, long necks and long legs, which hunt by waiting motionless or stalking their prey in shallow water before seizing it with a sudden lunge. They have a slow steady flight, with the neck retracted as is characteristic of herons and bitterns; this distinguishes them from storks, cranes, flamingos and spoonbills, which extend their necks.

Taxonomy[edit]

Some members of Ardea are clearly very closely related, such as the grey, great blue, and cocoi herons, which form a superspecies. However, the great egret, in particular, has been placed in other genera by various authors as Egretta alba and Casmerodius alba. Nevertheless, this species closely resembles the large Ardea herons in everything but color, whereas it shows fewer similarities to the smaller white egrets.

Species[edit]

A number of Ardea species are only known from subfossil or fossil bones. Their placement in Ardea versus Egretta may be provisional:

The remains described as Ardea perplexa are nowadays usually believed to be from an ibis of the genus Geronticus or closely related thereto. "Ardea formosa" (a nomen nudum) is now Proardeola, "Ardea" brunhuberi and "A." similis refer to a misidentified cormorant (Phalacrocorax intermedius) and partridge (Miogallus altus), respectively. "Ardea" lignitum – a fossil of quite recent age as it seems – some large owl, perhaps even a Eurasian eagle-owl (Bubo bubo).

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