Red-vented Bulbul
Encyclopedia
The Red-vented Bulbul is a member of the bulbul
family of passerine
bird
s. It is resident breeder in tropical southern Asia
from India
and Sri Lanka
east to Burma and southwestern China
. It has been introduced and has established itself in the wild in many Pacific islands including Fiji
, Samoa
, Tonga, and Hawaii
. It has also established itself in parts of Dubai
, the United Arab Emirates and New Zealand
. It is included in the list of the world's 100 worst invasive alien species
.
(or races). The nominate race is found in southern India. The type locality of Pondicherry was designated by Erwin Stresemann
. The race in the western part is intermedius and is found in Kashmir and Kohat
down to the Salt Range
and along the Himalayas to Kumaon. The race bengalensis is found in the Himalayas from Nepal east to Assam. South of these two forms are pallidus to the west south to Ahmednagar and saturatus along the east, south to the Godavari. There are no distinct boundaries to these racial forms and recent works do not recognize pallidus and saturatus (designated by Whistler & Kinnear, 1932 for the northeastern Peninsular India) but accept the desert form humayuni from Sindh and northwestern India, northeast Indian stanfordii (=stanfordi Deignan, 1949) and the Sri Lankan race haemorrhous (=haemorrhousus (J. F. Gmelin, 1789) ). Race melanchimus is found in Southern Burma and northern Thailand.
Race chrysorrhoides is found in China. Two formerly designated races nigropileus in Southern Burma and burmanicus of Northern Burma are considered as hybrids.
The Red-vented Bulbul is easily identified by its short crest giving the head a squarish appearance. The body is dark brown with a scaly pattern while the head is darker or black. The rump is white while the vent is red. The black tail is tipped in white. The Himalayan races have a more prominent crest and are more streaked on the underside. The Race intermedius of the Western Himalayas has a black hood extending to the mid-breast. Population bengalensis of Central and Eastern Himalayas and the Gangetic plain has a dark hood, lacks the scale like pattern on the underside and instead has dark streaks on the paler lower belly. Race stanfordi of the South Assam hills is similar to intermedius. The desert race humayuni has a paler brown mantle. The nominate race cafer is found in Peninsular India. Northeast Indian race wetmorei is between cafer, humayuni and bengalensis. about 20 cm in length, with a long tail. Sri Lankan race haemorrhous (=haemorrhousus) has a dark mantle with narrow pale edges. Race humayuni is known to hybridize with Pycnonotus leucogenys and these hybrids were once described as a subspecies magrathi marked by their pale rumps and yellow-orange or pink vents. In eastern Myanmar there is some natural hybridization with Pycnonotus aurigaster.
Sexes are similar in plumage, but young birds are duller than adults. The typical call has been transcribed as ginger beer but a number of sharp single note calls likened as pick are also produced. Their alarm calls are usually responded to and heeded by many other species of bird.
Melanistic as well as leucistic individuals have been noted.
It has been introduced into Hawaii, Fiji and New Zealand. They were introduced to Samoa in 1943 and became common on Upolu by 1957. Red-vented Bulbuls were introduced to Fiji around 1903 by indentured labourers from India. They established on the Tongan islands of Tongatapu and Niuafo'ou. They were introduced into Melbourne around 1917 but were not seen after 1942. They established in Auckland in the 1950s but were exterminated. They prefer the dry lowland regions in these introduced regions. They are considered as pests because of their habit of damaging fruit crops. Methiocarb and ziram have been used to protect cultivated Dendrobium orchids in Hawaii from damage by these birds. These birds learn to avoid the repellent chemicals. They can also disperse the seeds of invasive plants like Lantana camara
and Miconia calvescens
.
_nest_in_anantgiri,_ap_w_img_8905.jpg)
Red-vented bulbuls feed mainly on fruits, petals of flowers, nectar, insects and occasionally geckos. They have also been seen feeding on the leaves of Medicago sativa.
Red-vented bulbuls build their nests in bushes at a height of around 2–3 m (7–10 ft; two or three eggs is a typical clutch. Nests are occasionally built inside houses or in a hole in a mud bank. In one instance, a nest was found on a floating mat of Water hyacinth
leaves and another observer noted a pair nesting inside a regularly used bus. Nests in tree cavities have also been noted.
They breed from June to September. The eggs are pale-pinkish with spots of darker red more dense at the broad end. They are capable of having multiple clutches in a year. Nests are small flat cups made of small twigs but sometimes making use of metal wires. The eggs hatch after about 14 days. Both parents feed the chicks and on feeding trips wait for the young to excrete, swallowing the faecal sacs produced. The Pied Crested Cuckoo is a brood parasite
of this species. Fires, heavy rains and predators are the main causes of fledgeling mortality in scrub habitats in southern India.
_nest_in_anantgiri,_ap_w_img_8900.jpg)
Their vocalizations are usually stereotyped and they call throughout the year. However a number of distinct call types have been identified including roosting, begging, greeting, flight and two kinds of alarm calls.
They are important dispersers of seed of plants such as Carissa spinarum
.
The Red-vented Bulbul was among the first animals other than humans that was found to be incapable of synthesizing vitamin C
. However a large number of birds were later found to likewise lack the ability to synthesize vitamin C.
Like most birds, these bulbuls are hosts to coccidia
n blood parasites (Isospora
sp.) while some bird lice such as Menacanthus guldum (Ansari 1951 Proc. Natl. Inst. Sci. India 17:40) have been described as ectoparasites.
Along with Red-whiskered Bulbul
s this species has led to changes in the population dynamics of butterfly morphs on the island of Oahu in Hawaii. Here the population of white morphs of the Danaus plexippus butterfly have risen over a period of 20 years due to predation of the orange morphs by these bulbuls.
. They would be held on the finger with a thread attached and when they fought they would seize the red feathers of the opponents.
Being well known in culture they have been referred to by many local names including Kala bulbul (=black bulbul), Bulbuli, and Guldum in Hindi, Kala painju in Himachal Pradesh; Assamese: Bulbuli sorai; Cachar: Dao bulip; Dafla: Nili betom; Lepcha: Mancleph-pho; Naga: Inrui bulip; Bhutan: Paklom; Bhil: Peetrolyo; Gujarati: Hadiyo bulbul; Kutchi: Bhilbhil; Marathi: Lalbudya bulbul; Oriya: Bulubul; Tamil: Kondanchiradi, Konda-lati, Kondai kuruvi; Telugu: Pigli-pitta; Malayalam: Nattu bulbul; Kannada: Kempu dwarada pikalara; Sinhala: Konde kurulla.
Bulbul
Bulbuls are a family, Pycnonotidae, of medium-sized passerine songbirds. Many forest species are known as greenbuls. The family is distributed across most of Africa and into the Middle East, tropical Asia to Indonesia, and north as far as Japan. A few insular species occur on the tropical islands...
family of passerine
Passerine
A passerine is a bird of the order Passeriformes, which includes more than half of all bird species. Sometimes known as perching birds or, less accurately, as songbirds, the passerines form one of the most diverse terrestrial vertebrate orders: with over 5,000 identified species, it has roughly...
bird
Bird
Birds are feathered, winged, bipedal, endothermic , egg-laying, vertebrate animals. Around 10,000 living species and 188 families makes them the most speciose class of tetrapod vertebrates. They inhabit ecosystems across the globe, from the Arctic to the Antarctic. Extant birds range in size from...
s. It is resident breeder in tropical southern Asia
Asia
Asia is the world's largest and most populous continent, located primarily in the eastern and northern hemispheres. It covers 8.7% of the Earth's total surface area and with approximately 3.879 billion people, it hosts 60% of the world's current human population...
from India
India
India , officially the Republic of India , is a country in South Asia. It is the seventh-largest country by geographical area, the second-most populous country with over 1.2 billion people, and the most populous democracy in the world...
and Sri Lanka
Sri Lanka
Sri Lanka, officially the Democratic Socialist Republic of Sri Lanka is a country off the southern coast of the Indian subcontinent. Known until 1972 as Ceylon , Sri Lanka is an island surrounded by the Indian Ocean, the Gulf of Mannar and the Palk Strait, and lies in the vicinity of India and the...
east to Burma and southwestern China
China
Chinese civilization may refer to:* China for more general discussion of the country.* Chinese culture* Greater China, the transnational community of ethnic Chinese.* History of China* Sinosphere, the area historically affected by Chinese culture...
. It has been introduced and has established itself in the wild in many Pacific islands including Fiji
Fiji
Fiji , officially the Republic of Fiji , is an island nation in Melanesia in the South Pacific Ocean about northeast of New Zealand's North Island...
, Samoa
Samoa
Samoa , officially the Independent State of Samoa, formerly known as Western Samoa is a country encompassing the western part of the Samoan Islands in the South Pacific Ocean. It became independent from New Zealand in 1962. The two main islands of Samoa are Upolu and one of the biggest islands in...
, Tonga, and Hawaii
Hawaii
Hawaii is the newest of the 50 U.S. states , and is the only U.S. state made up entirely of islands. It is the northernmost island group in Polynesia, occupying most of an archipelago in the central Pacific Ocean, southwest of the continental United States, southeast of Japan, and northeast of...
. It has also established itself in parts of Dubai
Dubai
Dubai is a city and emirate in the United Arab Emirates . The emirate is located south of the Persian Gulf on the Arabian Peninsula and has the largest population with the second-largest land territory by area of all the emirates, after Abu Dhabi...
, the United Arab Emirates and New Zealand
New Zealand
New Zealand is an island country in the south-western Pacific Ocean comprising two main landmasses and numerous smaller islands. The country is situated some east of Australia across the Tasman Sea, and roughly south of the Pacific island nations of New Caledonia, Fiji, and Tonga...
. It is included in the list of the world's 100 worst invasive alien species
Invasive species
"Invasive species", or invasive exotics, is a nomenclature term and categorization phrase used for flora and fauna, and for specific restoration-preservation processes in native habitats, with several definitions....
.
Taxonomy
The Red-vented Bulbul was originally described by Linnaeus in 1766. Several populations of this widespread species have been named as subspeciesSubspecies
Subspecies in biological classification, is either a taxonomic rank subordinate to species, ora taxonomic unit in that rank . A subspecies cannot be recognized in isolation: a species will either be recognized as having no subspecies at all or two or more, never just one...
(or races). The nominate race is found in southern India. The type locality of Pondicherry was designated by Erwin Stresemann
Erwin Stresemann
Erwin Stresemann was a German naturalist and ornithologist.Stresemann was one of the outstanding ornithologists of the 20th century...
. The race in the western part is intermedius and is found in Kashmir and Kohat
Kohat District
Kohat is a district of the Khyber-Pakhtunkhwa province of Pakistan, Kohat city is the capital of the district. It is inhabited by various Pashtun tribes such as Afridi,Khattaks, Bangash and the Orakzaies. The main language of the district is Pashto....
down to the Salt Range
Salt Range
The Salt Range is a hill system in the Punjab province of Pakistan, deriving its name from its extensive deposits of rock salt. The range extends from the Jhelum River to the Indus, across the northern portion of the Punjab province. The Salt Range contains the great mines of Mayo, Khewra, Warcha...
and along the Himalayas to Kumaon. The race bengalensis is found in the Himalayas from Nepal east to Assam. South of these two forms are pallidus to the west south to Ahmednagar and saturatus along the east, south to the Godavari. There are no distinct boundaries to these racial forms and recent works do not recognize pallidus and saturatus (designated by Whistler & Kinnear, 1932 for the northeastern Peninsular India) but accept the desert form humayuni from Sindh and northwestern India, northeast Indian stanfordii (=stanfordi Deignan, 1949) and the Sri Lankan race haemorrhous (=haemorrhousus (J. F. Gmelin, 1789) ). Race melanchimus is found in Southern Burma and northern Thailand.
Race chrysorrhoides is found in China. Two formerly designated races nigropileus in Southern Burma and burmanicus of Northern Burma are considered as hybrids.
Description
Sexes are similar in plumage, but young birds are duller than adults. The typical call has been transcribed as ginger beer but a number of sharp single note calls likened as pick are also produced. Their alarm calls are usually responded to and heeded by many other species of bird.
Melanistic as well as leucistic individuals have been noted.
Habitat and distribution
This is a bird of dry scrub, open forest, plains and cultivated lands. In its native range it is rarely found in mature forests. A study based on 54 localities in India concluded that vegetation is the single most important factor that determines the distribution of the species.It has been introduced into Hawaii, Fiji and New Zealand. They were introduced to Samoa in 1943 and became common on Upolu by 1957. Red-vented Bulbuls were introduced to Fiji around 1903 by indentured labourers from India. They established on the Tongan islands of Tongatapu and Niuafo'ou. They were introduced into Melbourne around 1917 but were not seen after 1942. They established in Auckland in the 1950s but were exterminated. They prefer the dry lowland regions in these introduced regions. They are considered as pests because of their habit of damaging fruit crops. Methiocarb and ziram have been used to protect cultivated Dendrobium orchids in Hawaii from damage by these birds. These birds learn to avoid the repellent chemicals. They can also disperse the seeds of invasive plants like Lantana camara
Lantana camara
Lantana camara, also known as Spanish Flag or West Indian Lantana, is a species of flowering plant in the verbena family, Verbenaceae, that is native to the American tropics. It has been introduced into other parts of the world as an ornamental plant and is considered an invasive species in many...
and Miconia calvescens
Miconia calvescens
The velvet tree, miconia, or bush currant is a species of flowering plant in the family Melastomataceae. It is native to Mexico and Central and South America but is best known for being arguably the worst invasive plant in Hawaii, where it is commonly referred to as the "purple plague", and...
.
Behaviour and ecology
Red-vented bulbuls build their nests in bushes at a height of around 2–3 m (7–10 ft; two or three eggs is a typical clutch. Nests are occasionally built inside houses or in a hole in a mud bank. In one instance, a nest was found on a floating mat of Water hyacinth
Water hyacinth
The seven species of water hyacinth comprise the genus Eichhornia. Water hyacinth are a free-floating perennial aquatic plant native to tropical and sub-tropical South America. With broad, thick, glossy, ovate leaves, water hyacinth may rise above the surface of the water as much as 1 meter in...
leaves and another observer noted a pair nesting inside a regularly used bus. Nests in tree cavities have also been noted.
They breed from June to September. The eggs are pale-pinkish with spots of darker red more dense at the broad end. They are capable of having multiple clutches in a year. Nests are small flat cups made of small twigs but sometimes making use of metal wires. The eggs hatch after about 14 days. Both parents feed the chicks and on feeding trips wait for the young to excrete, swallowing the faecal sacs produced. The Pied Crested Cuckoo is a brood parasite
Brood parasite
Brood parasites are organisms that use the strategy of brood parasitism, a kind of kleptoparasitism found among birds, fish or insects, involving the manipulation and use of host individuals either of the same or different species to raise the young of the brood-parasite...
of this species. Fires, heavy rains and predators are the main causes of fledgeling mortality in scrub habitats in southern India.
They are important dispersers of seed of plants such as Carissa spinarum
Carissa spinarum
Carissa spinarum, the Conkerberry or Bush Plum, is a large shrub of the dogbane family , widely distributed in tropical regions around the Indian Ocean. It is most well known in Australia, where it is also called Currant Bush or, more ambiguously, "native currant" or even "black currant"...
.
The Red-vented Bulbul was among the first animals other than humans that was found to be incapable of synthesizing vitamin C
Vitamin C
Vitamin C or L-ascorbic acid or L-ascorbate is an essential nutrient for humans and certain other animal species. In living organisms ascorbate acts as an antioxidant by protecting the body against oxidative stress...
. However a large number of birds were later found to likewise lack the ability to synthesize vitamin C.
Like most birds, these bulbuls are hosts to coccidia
Coccidia
Coccidia is a subclass of microscopic, spore-forming, single-celled obligate parasites belonging to the apicomplexan class Conoidasida. Coccidian parasites infect the intestinal tracts of animals, and are the largest group of apicomplexan protozoa....
n blood parasites (Isospora
Isospora
Isospora is a genus of internal parasites classified under Coccidia.It is responsible for the condition isosporiasis.At least 248 species have been described in this genus, but most of them are little studied and it is doubtful whether all should be recognized as distinct species...
sp.) while some bird lice such as Menacanthus guldum (Ansari 1951 Proc. Natl. Inst. Sci. India 17:40) have been described as ectoparasites.
Along with Red-whiskered Bulbul
Red-whiskered Bulbul
The Red-whiskered Bulbul is a passerine bird found in Asia. It is a member of the bulbul family. It is a resident frugivore found mainly in tropical Asia. It has been introduced in many tropical areas of the world where populations have established themselves...
s this species has led to changes in the population dynamics of butterfly morphs on the island of Oahu in Hawaii. Here the population of white morphs of the Danaus plexippus butterfly have risen over a period of 20 years due to predation of the orange morphs by these bulbuls.
In culture
In 19th Century India these birds were frequently kept as cage pets and for fighting especially in the Carnatic regionCarnatic region
The Carnatic coast is the region of South India lying between the Eastern Ghats and the Coromandel Coast, in the modern Indian states of Tamil Nadu, south eastern Karnataka and southern Andhra Pradesh....
. They would be held on the finger with a thread attached and when they fought they would seize the red feathers of the opponents.
Being well known in culture they have been referred to by many local names including Kala bulbul (=black bulbul), Bulbuli, and Guldum in Hindi, Kala painju in Himachal Pradesh; Assamese: Bulbuli sorai; Cachar: Dao bulip; Dafla: Nili betom; Lepcha: Mancleph-pho; Naga: Inrui bulip; Bhutan: Paklom; Bhil: Peetrolyo; Gujarati: Hadiyo bulbul; Kutchi: Bhilbhil; Marathi: Lalbudya bulbul; Oriya: Bulubul; Tamil: Kondanchiradi, Konda-lati, Kondai kuruvi; Telugu: Pigli-pitta; Malayalam: Nattu bulbul; Kannada: Kempu dwarada pikalara; Sinhala: Konde kurulla.
Other sources
- Bellary,Sadananda A; Desai,RN (2000) Unusual nesting activity of the Red-vented Bulbul Pycnonotus cafer: two peculiar features. Newsletter for BirdwatchersNewsletter for BirdwatchersNewsletter for Birdwatchers is an Indian periodical of ornithology and birdwatching founded in 1960 by Zafar Futehally, who edited it until 2003. It was initially mimeographed and distributed to a small number of subscribers each month. The editorial board in its early years included Salim Ali,...
40(6):83-84. - Chowdhury,SR; Bhattacharyya,SP (1989) Circannual variation in the alveolar histodynamics and secretory activity of the uropygial gland of the male Redvented Bulbul Pycnonotus cafer (Linnaeus). Pavo 27(1&2), 5-14.
- Dasgupta,P; Bhattacharyya,SP (1988) Circannual changes in the testicular activity of the Redvented Bulbul Pycnonotus cafer (Linnaeus). Pavo 26(1&2):37-48.
- Deignan,HG (1949) Races of Pycnonotus cafer (Linnaeus) and P. aurigaster (Vieillot) in the Indo-Chinese subregion. J. Washington Acad. Sci. 39(8):273-279.
- Vijayan, VS (1975) Ecological isolation of bulbuls (Family Pycnonotidae, Class Aves) with special reference to Pycnonotus cafer cafer (Linn.) and Pycnonotus luteolus luteolus (Lesson) at Point Calimere, Tamil Nadu. Ph.D. Dissertation, University of Bombay, Bombay.
External links
- Red-vented Bulbul videos, photos & sounds on the Internet Bird Collection
- Type for Molpastes cafer after
- Invasive species database
- New Zealand alert
- Hawaii