Wallacean Drongo
Encyclopedia
The Wallacean Drongo or Greater Wallacean Drongo (Dicrurus densus) is a species of bird
in the Dicruridae family. It can be found in the countries of Indonesia
and East Timor
. Contrary to the independence of East Timor, the Wallacean Drongo continues to be considered an Indonesia
n endemic. It breeds
in both countries.
Its natural habitat
s are subtropical or tropical moist lowland forest
s, subtropical or tropical mangrove
forests, and subtropical or tropical moist montane
forests.
under the range size criterion. Its extent of occurrence
is greater than 20,000 km2. The population trend
is not known but it is not believed to be declining sufficiently rapidly, and the population size is believed to be large enough for it to not qualify as Vulnerable
using the population size criterion. For these reasons the species is classified as Least Concern
by the IUCN.
are recognized:
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...
in the Dicruridae family. It can be found in the countries of Indonesia
Indonesia
Indonesia , officially the Republic of Indonesia , is a country in Southeast Asia and Oceania. Indonesia is an archipelago comprising approximately 13,000 islands. It has 33 provinces with over 238 million people, and is the world's fourth most populous country. Indonesia is a republic, with an...
and East Timor
East Timor
The Democratic Republic of Timor-Leste, commonly known as East Timor , is a state in Southeast Asia. It comprises the eastern half of the island of Timor, the nearby islands of Atauro and Jaco, and Oecusse, an exclave on the northwestern side of the island, within Indonesian West Timor...
. Contrary to the independence of East Timor, the Wallacean Drongo continues to be considered an Indonesia
Indonesia
Indonesia , officially the Republic of Indonesia , is a country in Southeast Asia and Oceania. Indonesia is an archipelago comprising approximately 13,000 islands. It has 33 provinces with over 238 million people, and is the world's fourth most populous country. Indonesia is a republic, with an...
n endemic. It breeds
Breeding in the wild
Breeding in the wild is the natural process of animal reproduction occurring in the natural habitat of a given species. This terminology is distinct from animal husbandry or breeding of species in captivity...
in both countries.
Its natural habitat
Habitat
* Habitat , a place where a species lives and grows*Human habitat, a place where humans live, work or play** Space habitat, a space station intended as a permanent settlement...
s are subtropical or tropical moist lowland forest
Forest
A forest, also referred to as a wood or the woods, is an area with a high density of trees. As with cities, depending where you are in the world, what is considered a forest may vary significantly in size and have various classification according to how and what of the forest is composed...
s, subtropical or tropical mangrove
Mangrove
Mangroves are various kinds of trees up to medium height and shrubs that grow in saline coastal sediment habitats in the tropics and subtropics – mainly between latitudes N and S...
forests, and subtropical or tropical moist montane
Montane
In biogeography, montane is the highland area located below the subalpine zone. Montane regions generally have cooler temperatures and often have higher rainfall than the adjacent lowland regions, and are frequently home to distinct communities of plants and animals.The term "montane" means "of the...
forests.
Conservation Status
The Wallacean Drongo has a very large range and does not approach the thresholds for VulnerableVulnerable species
On 30 January 2010, the IUCN Red List of Threatened Species identified 9694 Vulnerable species, subspecies and varieties, stocks and sub-populations.-References:...
under the range size criterion. Its extent of occurrence
Occupancy-abundance relationship
In macroecology, the occupancy-abundance relationship is the relationship between the abundance of species and the size of their ranges within a region. This relationship is perhaps one of the most well-documented relationships in macroecology, and applies both intra- and interspecifically . In...
is greater than 20,000 km2. The population trend
Population ecology
Population ecology is a sub-field of ecology that deals with the dynamics of species populations and how these populations interact with the environment. It is the study of how the population sizes of species living together in groups change over time and space....
is not known but it is not believed to be declining sufficiently rapidly, and the population size is believed to be large enough for it to not qualify as Vulnerable
Vulnerable species
On 30 January 2010, the IUCN Red List of Threatened Species identified 9694 Vulnerable species, subspecies and varieties, stocks and sub-populations.-References:...
using the population size criterion. For these reasons the species is classified as Least Concern
Least Concern
Least Concern is an IUCN category assigned to extant taxon or lower taxa which have been evaluated but do not qualify for any other category. As such they do not qualify as threatened, Near Threatened, or Conservation Dependent...
by the IUCN.
Subspecies
The following six 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...
are recognized:
- D. densus densus (Bonaparte, 1850) Wallacean Drongo
- RotiRotiRoti is generally a South Asian bread made from stoneground wholemeal flour, traditionally known as atta flour, that originated and is consumed in India, Pakistan, Bangladesh, Nepal and Sri Lanka. It is also consumed in parts of the Southern Caribbean, particularly in Guyana, Suriname, Trinidad and...
, TimorTimorTimor is an island at the southern end of Maritime Southeast Asia, north of the Timor Sea. It is divided between the independent state of East Timor, and West Timor, belonging to the Indonesian province of East Nusa Tenggara. The island's surface is 30,777 square kilometres...
, WetarWetarThe tropical island of Wetar belongs to the Indonesian province of Maluku and is the largest island of the Barat Daya Islands . It lies east of the Lesser Sunda Islands, which include nearby Alor and Timor, but it is politically part of the Maluku Islands...
, and Sermata
- Roti
- D. densus vicinus (Rensch, 1928) Lesser Sunda Drongo
- LombokLombokLombok is an island in West Nusa Tenggara province, Indonesia. It forms part of the chain of the Lesser Sunda Islands, with the Lombok Strait separating it from Bali to the west and the Alas Strait between it and Sumbawa to the east...
, Lesser Sunda IslandsLesser Sunda IslandsThe Lesser Sunda Islands or Nusa Tenggara are a group of islands in the southern Maritime Southeast Asia, north of Australia. Together with the Greater Sunda Islands to the west they make up the Sunda Islands...
- Lombok
- D. densus bimaensis (Wallace, 1864) Bima Drongo
- SumbawaSumbawaSumbawa is an Indonesian island, located in the middle of the Lesser Sunda Islands chain, with Lombok to the west, Flores to the east, and Sumba further to the southeast. It is in the province of West Nusa Tenggara....
, KomodoKomodoKomodo may refer to:* Komodo dragon, is a large species of lizard found in the Indonesian islands of Komodo* Komodo , in Indonesia** kvh, a language spoken there, as listed in the standardized code ISO 639...
, Rinca, FloresFloresFlores is one of the Lesser Sunda Islands, an island arc with an estimated area of 14,300 km² extending east from the Java island of Indonesia. The population was 1.831.000 in the 2010 census and the largest town is Maumere. Flores is Portuguese for "flowers".Flores is located east of Sumbawa...
, PantarPantarPantar is the second largest island in the Indonesian Alor Archipelago, after Alor. To the east is the island of Alor and other small islands in the archipelago; to the west is the Alor Strait, which separates it from the Solor Archipelago. To the south is the Ombai Strait, and 72 km away,...
, AlorAlorAlor is the largest island in the Alor Archipelago located at the eastern-most end of the Lesser Sunda Islands that runs through southern Indonesia, which from the west include such islands as Bali, Lombok, Sumbawa, Komodo, and Flores....
, and GunungapiGunungapi WetarGunungapi Wetar is an isolated volcanic island to the north of Wetar island in the Banda Sea, Indonesia. The island, a stratovolcano, only extends 282 m above sea level, but the total height of the summit from the sea bed is over 5000 m. Explosions in 1512 and 1699 are the only historical...
- Sumbawa
- D. densus sumbae (Rensch, 1931) Sumba Drongo
- SumbaSumbaSumba is an island in eastern Indonesia, is one of the Lesser Sunda Islands, and is in the province of East Nusa Tenggara. Sumba has an area of 11,153 km², and the population was officially at 611,422 in 2005...
- Sumba
- D. densus kuehni (E. J. O. Hartert, 1901) Tanimbar Drongo
- Tanimbar IslandsTanimbar IslandsThe Tanimbar Islands, also called Timor Laut, are a group of about 65 islands in the Maluku province of Indonesia, including Fordata, Larat, Maru, Molu, Nuswotar, Selaru, Selu, Seira, Wotap, Wuliaru and Yamdena.-Geography:...
- Tanimbar Islands
- D. densus megalornis (G. R. Gray, 1858) Moluccan Drongo
- GorongGorong archipelagoGorong archipelago is between Watubela archipelago and Ceram in the Molucca Islands....
, Watubela Is.Watubela archipelagoWatubela is an archipelago in the Maluku Islands, east of Ceram and north of Kai Islands, and southwest of Bomberai Peninsula of Papua, Indonesia. It includes islands Kasiui and Tioor.-External links:*...
, and Kai Is.Kai IslandsThe Kai Islands of Indonesia are in the south-eastern part of the Maluku Islands, in Maluku Province.-Geography:...
, in southwest Moluccas
- Gorong
External links
- Photograph at mangoverde.com