The blue-crowned hanging parrot (''Loriculus galgulus'') is a parrot species endemic to southern

Burma Myanmar, ; UK pronunciations: US pronunciations incl. . Note: Wikipedia's IPA conventions require indicating /r/ even in British English although only some British English speakers pronounce r at the end of syllables. As John Wells explai ...

and

Thailand Thailand ( ), historically known as Siam () and officially the Kingdom of Thailand, is a country in Southeast Asia, located at the centre of the Indochinese Peninsula, spanning , with a population of almost 70 million. The country is bo ...

Malaya Malaya refers to a number of historical and current political entities related to what is currently Peninsular Malaysia in Southeast Asia: Political entities * British Malaya (1826–1957), a loose collection of the British colony of the Straits ...

Singapore Singapore (), officially the Republic of Singapore, is a sovereign island country and city-state in maritime Southeast Asia. It lies about one degree of latitude () north of the equator, off the southern tip of the Malay Peninsula, borde ...

, and

Indonesia Indonesia, officially the Republic of Indonesia, is a country in Southeast Asia and Oceania between the Indian and Pacific oceans. It consists of over 17,000 islands, including Sumatra, Java, Sulawesi, and parts of Borneo and New Guine ...

(

Sumatra Sumatra is one of the Sunda Islands of western Indonesia. It is the largest island that is fully within Indonesian territory, as well as the sixth-largest island in the world at 473,481 km2 (182,812 mi.2), not including adjacent i ...

Java Java (; id, Jawa, ; jv, ꦗꦮ; su, ) is one of the Greater Sunda Islands in Indonesia. It is bordered by the Indian Ocean to the south and the Java Sea to the north. With a population of 151.6 million people, Java is the world's List ...

Borneo Borneo (; id, Kalimantan) is the third-largest island in the world and the largest in Asia. At the geographic centre of Maritime Southeast Asia, in relation to major Indonesian islands, it is located north of Java, west of Sulawesi, and eas ...

). These parrots are 12cm in height and weight 28g and have a longevity of 14 years. They are recognized by their green plumage, black beak and characteristic blue feathers arranged like a crown on their head.

Taxonomy

The blue-crowned hanging parrot was formally described in 1758 by the Swedish naturalist

Carl Linnaeus Carl Linnaeus (; 23 May 1707 – 10 January 1778), also known after his ennoblement in 1761 as Carl von Linné Blunt (2004), p. 171. (), was a Swedish botanist, zoologist, taxonomist, and physician who formalised binomial nomenclature, the ...

in the tenth edition of his ''

Systema Naturae ' (originally in Latin written ' with the ligature æ) is one of the major works of the Swedish botanist, zoologist and physician Carl Linnaeus (1707–1778) and introduced the Linnaean taxonomy. Although the system, now known as binomial nomen ...

''. He placed it with all the other parrots in the

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

Psittacus ''Psittacus'' is a genus of African grey parrots in the subfamily Psittacinae. It contains the two species: the grey parrot (''Psittacus erithacus'') and the Timneh parrot (''Psittacus timneh''). For many years, the grey parrot and Timneh parr ...

'' and coined the

binomial name In taxonomy, binomial nomenclature ("two-term naming system"), also called nomenclature ("two-name naming system") or binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, bot ...

''Psittacus galgulus''. The type locality is the Malaysian state of

Malacca Malacca ( ms, Melaka) is a state in Malaysia located in the southern region of the Malay Peninsula, next to the Strait of Malacca. Its capital is Malacca City, dubbed the Historic City, which has been listed as a UNESCO World Heritage Site si ...

. The blue-crowned hanging parrot is now one of 14 hanging parrots placed in the genus '' Loriculus'' that was introduced in 1849 by the English zoologist

Edward Blyth Edward Blyth (23 December 1810 – 27 December 1873) was an English zoologist who worked for most of his life in India as a curator of zoology at the museum of the Asiatic Society of India in Calcutta. Blyth was born in London in 1810. In 1841 ...

. The genus name is a diminutive of the genus ''

Lorius ''Lorius'' is a genus of lory in the parrot family Psittaculidae. The genus contains six species that are distributed from the Moluccas in Indonesia through New Guinea to the Solomon Islands. They have characteristic red plumage with varying am ...

'' that was introduced by

Nicholas Aylward Vigors Nicholas Aylward Vigors (1785 – 26 October 1840) was an Ireland, Irish zoologist and politician. He popularized the classification of birds on the basis of the quinarian system. Early life Vigors was born at Old Leighlin, County Carlow on 17 ...

for the lorys in 1825. The specific epithet ''galgulus'' is an unidentified small bird described by the Roman author

Pliny the Elder Gaius Plinius Secundus (AD 23/2479), called Pliny the Elder (), was a Roman Empire, Roman author, Natural history, naturalist and Natural philosophy, natural philosopher, and naval and army commander of the early Roman Empire, and a friend of t ...

as hanging by its feet. The species is

monotypic In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispec ...

: no

subspecies In biological classification, subspecies is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (morphology), but that can successfully interbreed. Not all species ...

are recognised.

Description

Blue-crowned hanging parrots have green plumage and adults have black beaks. There is

sexual dimorphism Sexual dimorphism is the condition where the sexes of the same animal and/or plant species exhibit different morphological characteristics, particularly characteristics not directly involved in reproduction. The condition occurs in most ani ...

between males and females of the species. Adult males have a characteristic blue "crown" patch on their head and a red mark on their throat as well as a red rump bordered by a yellow lower back. Adult females plumage is duller green in color compared to the males, they do not have the red throat mark and have a less apparent or absent blue crown on the head and lack yellow feathers on their lower back. Juveniles' plumage is dull green, they also have little to no blue crown patch, they have a little to no blue crown visible and their bills are light in color. The calls these birds make when flying are shrill and squeaky. When flying in flocks, the calls can be described as rapid and ringing. As they forage, they utter shrill two-syllable calls.

Distribution and habitat

The blue-crowned hanging parrot is distributed throughout southern Thailand, western Malaysia, Singapore, Sumatra, Borneo and other nearby islands. The parrot inhabits forests, forest edges, swamps, riverine forest, bamboo patches, mangrove wooded gardens, and coconut groves, as well as plantations. Throughout its range,

Sulawesi Sulawesi (), also known as Celebes (), is an island in Indonesia. One of the four Greater Sunda Islands, and the world's eleventh-largest island, it is situated east of Borneo, west of the Maluku Islands, and south of Mindanao and the Sulu Ar ...

is the only area where more than one ''Loriculus'' species is found because intraspecific competition usually prevents other closely related species from overlapping.

Behaviour

The hanging parrot can be observed travelling alone, in pairs, or in parties of 150 individuals in the canopy. During the mating season, bonded pairs will remain together and the male will chase off any other male that approaches. Characteristic of hanging parrots, the blue-crowned hanging parrot sleeps upside down by hanging from tree branches. The birds climb or fly up tall trees and will hang by either both feet or only one foot and will fluff their feathers and tuck their head and neck into their body. This behaviour evolved in order to limit nighttime predation. The parrot's green plumage and hanging sleeping position imitates leaves among trees to camouflage themselves among the foliage. This behaviour was likely evolved from a common ancestor of Loriculus and Agapornis parrots endemic to Africa. Young and sick birds are unable to hang and will perch sitting upright to sleep with their head turned to one side while tucked into the back feathers. Young birds have undeveloped modifications necessary for hanging but develop these rapidly as they fledge.

Breeding

The blue-crowned hanging parrot forms bonded pairs during January to July for the breeding season. In order to court a female, the male will display by strutting; where the red rump, tail coverts, and red throat feathers are fluffed up. The male will erect his body and spread his tail and bob his head while running across a branch or perch. With wings held low, he makes soft twittery “jeet jeet” call while showing off his red and gold rump on his lower back to nearby females. In response, a female who is not impressed by the male will react aggressively by chasing him away, or she may act indifferently. If the female is interested in the male, she will actively encourage him and accept food from him. The pair's bond is maintained in this species through courtship feeding where the male will regurgitate food and offer it to a female. The female who accepts the food will perch close to the male and they then spend most of their time together. The parrots will carry nesting material in their contour feathers by tucking them with their beaks. The nests are built by the bird in natural cavities like open tree branches and made out of substrate like bark and leaves the bird finds in its habitat. The females have a gestation period of 20 days where she will incubate her eggs inside the nest. A single clutch can have up to 4 eggs and the chicks leave the nest about 33 days after hatching.

Food and feeding

Hanging parrots eat mainly fruits, such as papaya and rambutan, in the wild but will also feed on palm oil nuts, seeds, nectar, and fresh flowers. The blue-crowned hanging parrot employs different feeding methods. Young birds usually use their mandibles to nibble and break off pieces of food when perching and will flick their heads rapidly to remove the pulp after extracting its juice. Adults use their feet or bills to carry food and will feed when perching. Feeding usually occurs away from the food source after being carried to a perch. The bird can bring the food held up by the foot to its beak to feed and they can also hold up their foot and lower their head to feed. Other methods involve holding the food between its claws on the perch and lowering the head completely to feed.

Relationship to humans

This species is commonly called Serindit Melayu in the

Riau Riau is a province of Indonesia. It is located on the central eastern coast of Sumatra along the Strait of Malacca. The province shares land borders with North Sumatra to the northwest, West Sumatra to the west, and Jambi to the south. Accord ...

province and are typically kept as pets. The blue-crowned hanging parrot are important to the flora and Riau identity. Its name is used in "Hulu Keris," an important symbol of the province as part of the traditional clothing of Riau symbolizing courage, wisdom when upholding truth and justice. In Riau folklore stories of the faunal world, the hanging parrot is referred to as Panglima Hijau. In Malay literature, the blue-crowned hanging parrot symbolically represents love and is considered a love-bird. It is also commonly referred to in rhymes and poetry and is used in ritual activities.

References

External links

World Parrot Trust
Parrot Encyclopedia - Species Profile

* ttp://orientalbirdimages.org/search.php?Bird_ID=500 Oriental Bird Images: ''Blue-crowned Hanging Parrot'' Selected photos

blue-crowned hanging parrot The blue-crowned hanging parrot (''Loriculus galgulus'') is a parrot species endemic to southern Burma and Thailand, Malaya, Singapore, and Indonesia (Sumatra, Java, Borneo). These parrots are 12cm in height and weight 28g and have a longevity o ...

Birds of Malesia

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