Yellow-rumped honeyguide

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Yellow-rumped honeyguide
Yellow-rumped Honeyguide from Eaglenest Wildlife Sanctuary in Arunachal Pradesh.jpg
From Eaglenest Wildlife Sanctuary in Arunachal Pradesh, India
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Piciformes
Family: Indicatoridae
Genus: Indicator
Species:
I. xanthonotus
Binomial name
Indicator xanthonotus
Blyth, 1842

The yellow-rumped honeyguide (Indicator xanthonotus) is a sparrow-sized bird in the honeyguide family that is found in Asia, mainly in montane forests along the Himalayas. They are very finch-like but the feet are strong and zygodactyl, with two toes facing forward and two backward. They perch on honeycombs and feed on wax. Males tend to be territorial and stay near honeycombs while females and juveniles forage widely. They are brood parasites, laying their eggs in the nests of tree-hole breeders, possibly barbets.

Contents

Description

From Pabyuk-Naitam, East Sikkim, India. Yellow-rumped Honeyguide Pabyuk-Naitam Sikkim March 2019.jpg
From Pabyuk-Naitam, East Sikkim, India.

The yellow-rumped honeyguide is sparrow sized and has a stout finch-like bill. The plumage is largely dusky olive and the forehead and lores are orange while the upper plumage. There is a streaked appearance to the wing feathers. The rump is deep orange and extends into the back grading to sulphur yellow. The chin and throat are yellowish while the lower plumage is pale grey with dark streaks. The bill is yellow but dark towards the tip. Females have less extensive yellow on the face and the rump is yellow and lacks the orange. Allan Octavian Hume described the subspecies radcliffi (after Colonel E. Delmé-Radcliffe [2] ) based on specimens from Hazara but no specimens or information from the region have subsequently been obtained putting it in some doubt. The species was described by Blyth based on specimens from near Darjeeling. Ripley described specimens from the Naga Hills as subspecies fulvus (not always recognized), said to be smaller and darker, with the streaking on the abdomen reduced and the yellow on the forehead restricted to the anterior. [3] This population may be identical to the nominate of the eastern Himalayas. [4] [5] They have twelve tail feathers and nine primaries. The wing is long and pointed. [6] [7]

Behaviour and ecology

A chipping call is produced in flight and when agitated. The flight is straight (may sometimes be undulating [5] ) and direct, sometimes in flocks of 20 to 30 birds. At deserted honeycombs, the bird clings tight and presses its tail on the surface of the comb. They feed mainly on the foundation wax of Apis laboriosa that attach the comb to rocks. They feed on active beehives without disturbing the bees much. [4] They have been observed to make use of the attacks of Vespa mandarinia on Apis laboriosa colonies. [8]

Adult photographed in West Sikkim, India Yellow-rumped Honeyguide Khangchendzonga National Park West Sikkim Sikkim India 17.02.2016, crop.jpg
Adult photographed in West Sikkim, India

A display of a male involved fluffing its feathers, holding the bill high and flicking wings while swaying from side to side. A female was observed flicking its tail and pressing it down with wings drooped before being mounted by a male. [4] They are brood parasites, laying their eggs in the nest of host species. The host species for the yellow-rumped honeyguide are as yet unknown and undocumented. Young birds of honeyguide species have bill-hooks with which they destroy the eggs and chicks of the host. [5] The male holds territories around hives and are polygynous, allowing females with whom it had mated and their young into the territories. This mating system has been termed as "resource-based non-harem polygyny". [9]

Unlike other honeyguides, this species has not been observed to lead humans and bears to bee hives. [5]

Distribution and habitat

The species has been recorded from northern Pakistan (Hazara and Murree Hills [10] ) but the population here may have been extirpated [5] and then in the Himalayan regions of India from western Uttar Pradesh and Himachal Pradesh extending into Nepal, Sikkim, Arunachal Pradesh and Bhutan (where it is relatively common). It is also found in southeastern Tibet and northern Myanmar. [5] It is found in coniferous and dry-deciduous forest with rocky boulders and cliffs. May make altitudinal movements seasonally. [6]

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References

  1. BirdLife International (2016). "Indicator xanthonotus". IUCN Red List of Threatened Species . 2016: e.T22680652A92870873. doi: 10.2305/IUCN.UK.2016-3.RLTS.T22680652A92870873.en . Retrieved 12 November 2021.
  2. Jerdon, TC (1872). "Supplementary notes to "The Birds of India"". Ibis. 3rd Series. 2 (5): 1–22.
  3. Ripley, SD (1951). "Notes on Indian birds: IV". Postilla. 6: 1–7.
  4. 1 2 3 Hussain, SA; Ali, Salim (1983). "Some notes on the ecology and the status of the Orangerumped Honeyguide Indicator xanthonotus in the Himalayas". J. Bombay Nat. Hist. Soc. 80 (3): 564–574.
  5. 1 2 3 4 5 6 Rasmussen PC & JC Anderton (2005). Birds of South Asia: The Ripley Guide. Volume 2. Smithsonian Institution & Lynx Edicions. p. 280.
  6. 1 2 Ali, S. & S. D. Ripley (1983). Handbook of the Birds of India and Pakistan. Volume 4 (2nd ed.). Oxford University Press. pp. 165–167.
  7. Blanford WT (1895). The Fauna of British India, Including Ceylon and Burma. Birds. Volume 3. Taylor and Francis, London. pp. 81–82.
  8. Hussain, SA; Ali, Salim (1979). "Beehive predation by Wasps (Genus Vespa) and its possible benefit to Honeyguides (Indicatoridae) in Bhutan". J. Bombay Nat. Hist. Soc. 76 (1): 157–159.
  9. Cronin, E. W. & P. W. Sherman (1976). "A resource-based mating system: the Orange-rumped Honeyguide". Living Bird. 15: 5–32.
  10. Magrath, HAF (1909). "Bird notes from Murree and the Galis". J. Bombay Nat. Hist. Soc. 19 (1): 142–156.