White-bellied woodpecker

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White-bellied woodpecker
WhiteBelliedWoodpecker.JPG
D. j. hodgsonii
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Piciformes
Family: Picidae
Genus: Dryocopus
Species:
D. javensis
Binomial name
Dryocopus javensis
(Horsfield, 1821)
Subspecies

See text

The white-bellied woodpecker or great black woodpecker (Dryocopus javensis) is a woodpecker species inhabiting evergreen forests in tropical Indian subcontinent and Southeast Asia. It is among the largest of the Asiatic woodpeckers and nests in large dead trees, often beside rivers. It has 14 subspecies, and many of its island forms are endangered, some are extinct. Populations differ in the distribution and extent of white. Its drums and calls are louder than those of the smaller woodpeckers.

Contents

Description

Cotigao NP, Goa, India Nov 1997

This species is one of the largest living species of woodpecker. Adults range in size from 40 to 48 cm (16 to 19 in) and are behind only to the great slaty woodpecker and black woodpecker in size among Asian woodpecker species. The species is considered closely related to the more northern black woodpecker and the North American pileated woodpecker and is similar in size to these species. Body mass can vary from 197 to 350 g (6.9 to 12.3 oz). Among standard measurements, the wing chord is 20.5 to 25.2 cm (8.1 to 9.9 in), the tail is 14.3 to 18.9 cm (5.6 to 7.4 in), the bill is 4.6 to 6 cm (1.8 to 2.4 in) and the tarsus is 3.2 to 4.3 cm (1.3 to 1.7 in). [2]

The subspecies hodgsonii has whitish underwing coverts and a white rump. The face lacks white, but juveniles of the nominate race can have white streaks on the throat. [3] Differences from the other Southeast Asian subspecies in the vocalizations and morphology of this species are suggested to be large enough to raise this to full species status. [4] Solitary adults may spend an hour foraging at a suitable tree. [5] The subspecies hodgsonii of India breeds from January to May, mainly in large dead trees, often using the same tree year after year. [6] The normal clutch is usually of two eggs. [7] They feed mainly on insects such as ants [8] or grubs obtained mainly from under bark, but sometimes take fruit. [9] Although shy, they can nest close to well-used tracks and human disturbed areas. [6] [10] They have a range of calls from a short, sharp kuk to more intoned kyuk, kew, kee-yow calls. The longer calls are given prior to flying off. They roost within holes. [5]

Subspecies

Male, the Philippines Wb-woodpecker.jpg
Male, the Philippines
Tristram's woodpecker (D. j. richardsi) ThriponaxKalinowskiiKeulemans.jpg
Tristram's woodpecker (D. j. richardsi)

Fourteen subspecies have been described:

The Andaman woodpecker (Dryocopus hodgei) was treated as a subspecies in the past. The species has in the past been placed in the genus Thriponax and Macropicus. [14]

Behaviour and ecology

This large black woodpecker is usually seen singly or as a pair, which may sometimes be accompanied by a third bird. They have a dipping in which the loud single note, a laugh-like chiank call, is produced. They also produce loud drumming, especially in the breeding season. The breeding season is mainly January to March. The nest is built in a large dead tree, often in open forest. Two white eggs are the usual clutch. In Bastar in central India, the squabs are sought after by tribals, resulting in the rarity of these birds there. [14]

Related Research Articles

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References

  1. BirdLife International (2016). "Dryocopus javensis". IUCN Red List of Threatened Species . 2016: e.T22681376A92903645. doi: 10.2305/IUCN.UK.2016-3.RLTS.T22681376A92903645.en . Retrieved 12 November 2021.
  2. Woodpeckers: An Identification Guide to the Woodpeckers of the World by Hans Winkler, David A. Christie & David Nurney. Houghton Mifflin (1995), ISBN   978-0395720431
  3. Robinson, H.C. & F.N. Chasen (1939). Birds of the Malay Peninsula Volume 4 (PDF). H.F. & G. Witherby, London. pp. 286–288.
  4. Rasmussen, P.C. & J.C. Anderton (2005). Birds of South Asia: The Ripley Guide Volume 2. Smithsonian Institution & Lynx Edicions. pp. 285–286.
  5. 1 2 Short, L.L. (1973). "Habits of some Asian Woodpeckers (Aves, Picidae)". Bulletin of the American Museum of Natural History. 152: 253–364. hdl:2246/603.
  6. 1 2 Santharam, V. (2003). "Distribution, ecology and conservation of the White-bellied Woodpecker Dryocopus javensis in the Western Ghats, India" (PDF). Forktail. 19: 31–38.
  7. Kinloch, A.P. (1923). "The nidification of the Malabar Great Black Woodpecker Thriponax hodgsoni". Journal of the Bombay Natural History Society. 29 (2): 561.
  8. Abdulali, Humayun (1941). "The Great Black Woodpecker in the neighbourhood of Bombay". Journal of the Bombay Natural History Society. 42 (4): 933–934.
  9. Santharam, V. (1999). "Frugivory by the Great Black Woodpecker Dryocopus javensis". Journal of the Bombay Natural History Society. 96 (2): 319–320.
  10. Neelakantan, K.K. (1975). "A day at a nest of the Great Black Woodpecker (Dryocopus javensis)". Journal of the Bombay Natural History Society. 72 (2): 544–548.
  11. Ali, S. (1951). "Discovery of the so-named 'Malabar' Black Woodpecker [Dryocopus javensis hodgsoni (Jerdon)] in Bastar (East Madhya Pradesh)". Journal of the Bombay Natural History Society. 49 (4): 787–788.
  12. Blanford, W.T. (1895). Fauna of British India: Birds Volume 3. Taylor and Francis, London. pp. 72–73.
  13. Morris, R.C. (1939). "On the occurrence of the Banded Crake (Rallus e. amuroptera) and the Malabar Woodpecker (Macropicus j. hodgsoni) in the Billigirirangan Hills, S. India". Journal of the Bombay Natural History Society. 40 (4): 763.
  14. 1 2 Ali, S. & S.D. Ripley (1983). Handbook of the Birds of India and Pakistan Volume 4 (2nd ed.). Oxford University Press. pp. 208–210.