Overview
Comprehensive Description
Description
Despite its English common name, the purple heron actually has a chestnut-red head and neck with striking vertical black stripes, grey shoulders and outer-wings, and a rich chestnut stomach and inner-wings. The Spanish name for the purple heron is garza imperial, which translates as the ‘imperial heron’, perhaps a more suitable name for this vibrant-looking species. Its regal appearance is emphasized by the elongated golden-ochre beak, proportionally larger than most species of its genus . Its kinked, snake-like neck is coiled into an s-shape when in flight, and with longer toes than other similar species, the purple heron can wade over floating vegetation with ease. Although both sexes are similar in appearance, the female is lighter than the male. The juvenile heron is duller, with beige and brown chest, and it lacks the neck stripes and the extended plumage of the adult.
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Distribution
Global Distribution
The purple heron is common throughout southern and eastern Europe, central and southern Asia, and Africa.
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Physical Description
Size
Size
Length: 78 – 90 cm. Wingspan: 120 – 150 cm. Weight : 525 – 1345 g.
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Ecology
Habitat
Habitat and Ecology
Systems
- Terrestrial
- Freshwater
- Marine
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Habitat
The purple heron inhabits wetland habitat such as swamps, reed-beds, rice-fields, and lake shores. It is found from sea-level up to an altitude of about 1,800 metres.
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Associations
Associations
Animal / parasite / ectoparasite
imago of Icosta ardeae ectoparasitises Ardea purpurea
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Life History and Behavior
Behavior
Behaviour
Usually feeding at dusk or dawn, the purple heron has a very varied diet consisting of fish, salamanders, frogs, insects, crustaceans, spiders, molluscs, small birds, mammals, snakes and lizards. It hunts by hiding in vegetation and waiting motionless until prey approaches.
Populations breeding in Europe, the Middle East and North Africa are migratory and travel between breeding and wintering grounds. However, southern African and tropical Asian populations are non-migratory. The purple heron migrates by day, typically in small groups, although in Turkey it is known to migrate in large groups of 350 to 400 individuals. Purple herons often nest alongside other heron species, such as the grey heron, in groups that typically do not exceed 50 pairs; however, a colony of 1,000 pairs has been recorded. Between two and eight eggs are laid, which are incubated for 25 to 27 days, and the fledglings reach independence at around 45 to 50 days.
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Life Expectancy
Lifespan, longevity, and ageing
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Molecular Biology and Genetics
Molecular Biology
Statistics of barcoding coverage: Ardea purpurea
Public Records: 0
Species: 1
Species With Barcodes: 1
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Conservation
Conservation Status
IUCN Red List Assessment
Red List Category
Red List Criteria
Version
Year Assessed
Assessor/s
Reviewer/s
Contributor/s
Justification
History
- 2008Least Concern
- 2004Least Concern
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Status in Egypt
Resident breeder, regular passage visitor and winter visitor.
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Threats
Threats
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Threats
Due to its huge range, the purple heron is not currently considered to be globally threatened. Populations, however, are reportedly declining, mainly as a result of human-induced factors. The loss of its wetland habitat due to agriculture, drainage, pesticide use and reed cane harvesting has caused concern about some localised populations. Also, many flocks of purple herons are migratory and so are sensitive to changes in both their breeding and wintering grounds.
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Wikipedia
Purple Heron
The Purple Heron (Ardea purpurea) is a wading bird in the heron family Ardeidae, breeding in Africa, central and southern Europe, and southern and eastern Asia. The European populations are migratory, wintering in tropical Africa; the more northerly Asian populations also migrate further south within Asia. It is a rare but regular wanderer north of its breeding range.
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Description
The Purple Heron is a large bird, 78–90 cm (31–35 in) in length with a standing height of up to 94 cm (37 in) and a 120–152 cm (47–60 in) wingspan.[1] However, it is slender for its size, weighing only 0.5–1.35 kg (1.1–3.0 lb).[2] It is somewhat smaller than the Grey Heron, from which it can be distinguished by its darker reddish-brown plumage, and, in adults, darker grey back. It has a narrower yellow bill, which is brighter in breeding adults.
Taxonomy
There are three or four subspecies:
- Ardea purpurea purpurea Linnaeus, 1766. Africa, Europe north to the Netherlands, and southwestern Asia east to Kazakhstan.
- Ardea purpurea bournei (de Naurois, 1966), Bourne's Heron. Cape Verde Islands (included in purpurea by some authors, but treated as a distinct species Ardea bournei by some others).
- Ardea purpurea madagascariensis Oort, 1910. Madagascar.
- Ardea purpurea manilensis Meyen, 1834. Asia from Pakistan east to the Philippines and north to Primorsky Krai, Russia.
Behaviour
The Purple Heron breeds in colonies in reed beds or trees close to large lakes or other extensive wetlands. It builds a bulky stick nest.
It feeds in shallow water, spearing fish, frogs, insects and small mammals. It will often wait motionless for prey, or slowly stalk its victim. It tends to keep within reedbeds more than the Grey Heron, and is often inconspicuous, despite its size.
It has a slow flight, with its neck retracted. This is characteristic of herons and bitterns, and distinguishes them from storks, cranes and spoonbills, which extend their necks. The long neck of Purple Heron looks particularly snake-like, with more of an S-shape in flight. The call is a loud croaking "krek".
The Purple Heron is one of the species to which the Agreement on the Conservation of African-Eurasian Migratory Waterbirds (AEWA) applies.
References
- ^ "Purple heron videos, photos and facts - Ardea purpurea". ARKive. http://www.arkive.org/purple-heron/ardea-purpurea/#text=Facts. Retrieved 2011-10-18.
- ^ CRC Handbook of Avian Body Masses by John B. Dunning Jr. (Editor). CRC Press (1992), ISBN 978-0-8493-4258-5.
- BirdLife International (2008). Ardea purpurea. In: IUCN 2008. IUCN Red List of Threatened Species. Downloaded on 9 February 2009. Database entry includes justification for why this species is of least concern.
- Handbook of the Birds of the World 1: 407. Lynx Edicions.
- Ornitaxa: Ardea bournei split as a separate species
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