Heart-spotted woodpecker

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Heart-spotted woodpecker
Heart Spotted Woodpecker (male).jpg
Male
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Piciformes
Family: Picidae
Genus: Hemicircus
Species:
H. canente
Binomial name
Hemicircus canente
(Lesson, 1832)
Synonyms
  • Hemicercus cordatus

The heart-spotted woodpecker (Hemicircus canente) is a species of bird in the woodpecker family. It has a contrasting black and white plumage, a distinctively stubby body and a large wedge-shaped head making it easy to identify while its frequent calling make it easy to detect as it forage for invertebrates under the bark of the slender outer branches of trees. They move about in pairs or small groups and are often found in mixed-species foraging flocks. They have a wide distribution across Asia with populations in the forests of southwestern and central India which are slightly separated from their ranges in the Himalayas and Southeast Asia.

Contents

Taxonomy

The heart-spotted woodpecker was described in 1832 by the French naturalist René Lesson from a specimen collected from Bago in Myanmar. He coined the binomial name Picus canente. [2] [3] The specific name is from Roman mythology: Canens was a sweet-voiced nymph, her husband was Picus. [4] The species is now placed in the genus Hemicircus that was introduced in 1837 by the English naturalist William Swainson. [5] [6] The species is monotypic: no subspecies are recognised. [6]

Description

Female heart spotted woodpecker on a fig tree at Dandeli tiger reserve, India Heart spotted woodpecker dandeli.jpg
Female heart spotted woodpecker on a fig tree at Dandeli tiger reserve, India

A small, uniquely shaped, black and buff woodpecker with a large crest making the head look large for the short body and tail. Both males and females are predominantly black with heart-shaped black spots on white shoulders with broad white scapular patches and barring of flight feathers. The female has the forehead and crown buffy white while on males it is black with small white dots. The throat is whitish and the underparts are dark olive grey. A tuft of feathers on the back are specialized and are lipid rich which causes the feathers to stick together in preserved specimens. [7] [8] These special feathers or "fat quills" sometimes make the rump feathers appear buff and may be a form of "cosmetic colouration" and the secretion is said to have a pleasant smell but the functional significance is unknown. [9] [10] [11] [12]

Habitat and distribution

Its natural habitat is subtropical or tropical moist lowland forests. They are found in the Himalayan forests of India, and extend into Bangladesh, Myanmar, Thailand, Laos, Cambodia and Vietnam. Within India, they are also found in the Western Ghats and the forests of central India. [13] A subspecies cordatus based on the description by Thomas C. Jerdon from a specimen from the Western Ghats is not considered distinct and the populations differ slightly in plumage colour and vary clinally in size (the northern birds being larger than those closer to the equator). [10] [14] [15]

Behaviour and ecology

Female Heart Spotted Woodpecker(Female).jpg
Female

These woodpeckers forage in pairs, sometimes joining mixed-species foraging flocks. They fly from tree to tree in a sharply bounding flight giving a head-heavy appearance. They forage on thin branches and call often. They feed mainly on insects under bark but have been known to peck the pods of Cassia fistula to obtain insect larvae. [16] The calls include a sharp twee-twee-twee (duet call) sometimes leading to a trill of several notes, [17] a nasal ki-yeew [18] and repeated su-sie calls. [19] They drum infrequently during the breeding season, mainly during winter and before the Monsoons. The nest is bored in a dead branch with a narrow 3 to 4 cm diameter opening and the tunnel going down obliquely about 20 cm before widening into a chamber. Nests may sometimes be built in fence posts. [20] The usual clutch is 2 or 3 eggs, which are unmarked white. [10] Ticks of the species Haemaphysalis spinigera have been noted on these birds. [21]

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References

  1. BirdLife International (2016). "Hemicircus canente". IUCN Red List of Threatened Species . 2016: e.T22681572A92911431. Retrieved 9 November 2021.
  2. Lesson, René P. (1830). Centurie zoologique, ou, Choix d'animaux rares, nouveaux ou imparfaitement connus : enrichi de planches inédites, dessinées d'après nature par M. Prêtre, gravées et coloriées avec le plus grand soin. Paris: Chez F.G. Levrault. p. 215. Although the title page gives the year as 1830, the book was not published until 1832.
  3. Peters, James Lee, ed. (1948). Check-List of Birds of the World. Vol. 6. Cambridge, Massachusetts: Harvard University Press. p. 223.
  4. Jobling, James A. (2010). The Helm Dictionary of Scientific Bird Names . London: Christopher Helm. p.  88. ISBN   978-1-4081-2501-4.
  5. Swainson, William (1837). On the Natural History and Classification of Birds. Vol. 2. London: John Taylor. p. 306.
  6. 1 2 Gill, Frank; Donsker, David; Rasmussen, Pamela, eds. (2020). "Woodpeckers". IOC World Bird List Version 10.1. International Ornithologists' Union . Retrieved 15 May 2020.
  7. Bock, WJ; LL Short Jr (1971). "'Resin secretion' in Hemicircus (Picidae)". Ibis. 113 (2): 234–238. doi:10.1111/j.1474-919X.1971.tb05149.x.
  8. Menon GK; J Menon (2000). "Avian epidermal lipids: functional considerations and relationship to feathering". American Zoologist. 40 (4): 540–552. doi: 10.1093/icb/40.4.540 .
  9. Delhey, K; A Peters; B Kempenaers (2007). "Cosmetic coloration in birds: occurrence, function, and evolution" (PDF). American Naturalist. 169: S145 –S158. doi:10.1086/510095. PMID   19426089. S2CID   29592388. Archived from the original (PDF) on 2011-07-19.
  10. 1 2 3 Ali, S.; Ripley, S.D. (1983). Handbook of the Birds of India and Pakistan. Vol. 4 (2nd ed.). Oxford University Press. pp. 236–237.
  11. Blanford WT (1895). The Fauna of British India, Including Ceylon and Burma. Birds. Volume 3. Taylor and Francis, London. pp. 68–70.
  12. Hargitt, Edward (1884). "Notes on woodpeckers VIII. The genus Hemicircus". Ibis. 26 (3): 244–259. doi:10.1111/j.1474-919X.1884.tb01163.x.
  13. Kanoje, R (1995). "Heartspotted Woodpecker in the Kanha National Park". Newsletter for Birdwatchers. 35 (5): 96.
  14. Ali,S (1951). "The Heart-spotted Woodpecker - Hemicircus canente". Journal of the Bombay Natural History Society. 49 (4): 786–787.
  15. Jerdon,T C (1840). "Catalogue of the birds of the peninsula of India". Madras Journal of Literature and Science. 11 (27): 209–239.
  16. Santharam, V. (1998). "Woodpeckers feeding on Cassia pods". Journal of the Bombay Natural History Society. 95 (3): 505–506.
  17. Betts, FN (1934). "South Indian woodpeckers". Journal of the Bombay Natural History Society. 37: 197–203.
  18. Rasmussen PC; JC Anderton (2005). Birds of South Asia: The Ripley Guide. Vol. 2. Smithsonian Institution & Lynx Edicions. p. 291.
  19. Santharam, V. (2004). "Duetting calls of the Heart-spotted Woodpeckers Hemicircus canente (Lesson)". Journal of the Bombay Natural History Society. 101 (1): 157–158.
  20. Inglis, Charles M (1931). "The nesting of the Malabar Heart-spotted Woodpecker (Hemicircus canante cordatus) in Travancore". Journal of the Bombay Natural History Society. 35 (1): 207–208.
  21. Rajagopalan, PK (1972). "Ixodid ticks (Acarina: Ixodidae) parasitizing wild birds in the Kyasanur forest disease area of Shimoga District, Mysore State, India". Journal of the Bombay Natural History Society. 69 (1): 55–78.

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