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Overview

Brief Summary

The Silver-breasted Broadbill (Serilophus lunatus) is found in tropical and subtropical broadleaved evergreen and semi-evergreen forests from 50 to 2230 m elevation in Southeast Asia from northeastern India and southeastern China south to Sumatra; altitudinal range apparently varies across the species’ geographic distribution. Silver-breasted Broadbills may also be found in mixed deciduous forests, including areas dominated by pine, oak, and bamboo, and sometimes on agricultural land and in gardens.

The sexes are similar in appearance, but the female has a narrow silver band across the upper breast. Juveniles resemble adults, but have shorter wings and tail and somewhat darker plumage. Silver-breasted Broadbills are generally silent, with calls heard mainly around the nest. Robson (2005) describes the voice as a melancholy “pee-uu” (uu lower pitch) and a staccato trilled “kitikitiki".

The diet consists of invertebrates, mainly insects. Birds forage in pairs or in groups of up to 20 (usually fewer) and may join mixed flocks foraging in the understory. The nest, built by both sexes (sometimes with helpers), is a pendant ball with a long loose “tail”; construction takes 5 to 10 days. The nest is typically placed 1 to 7 (usually 3 to 5) m high over open spaces such as roads or small streams. Clutch size is 2 to 7 eggs, usually 4 to 5 but reportedly 2 to 3 in peninsular Malaysia. Both sexes, sometimes with helpers, incubate eggs and feed chicks. The Silver-breasted Broadbill is a documented cuckoo host in southern Burma and Sumatra.

This species is a year-round resident over most of its range, but is apparently an altitudinal migrant in the Himalayas. It was formerly very common over most of its range, but is now only locally common. It has not been recorded from Nepal since the 19th century and is rare and local in Bhutan. Populations are probably much much reduced from northeastern India to Burma. It is uncommon in northern Thailand, but fairly common in other parts of the country, where it still supplies the domestic cagebird market. Populations have significantly declined in Indochina, although the species is still being discovered in new localities. It is very rare in China and uncommon to locally common in the Malay Peninsula and Sumatra. Robson (2005) reported the geographic abundance of this species as uncommon to locally common in Southeast Asia with the exception of central Thailand, Singapore, and Cochinchina (=the southern third of Vietnam).

(Bruce 2003 and references therein; Robson 2005)

  • Bruce, M.D. 2003. Family Eurylaimidae (Broadbills). Pp. 54-93. In: del Hoyo, J., A. Elliott, and D.A. Christie (eds.). Handbook of the Birds of the World. Vol. 8. Broadbills to Tapaculos. Lynx Edicions, Barcelona.
  • Robson, C. 2005. Birds of Southeast Asia. Princeton University Press, Princeton, New Jersey.
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General Summary

Serilophus lunatus, commonly known as the Silver-breasted Broadbill or the Silver Breasted Broadbill, is a species of bird in the Order Passeriformes and Family Eurylaimidae. As its scientific name correctly implies, the Silver-breasted Broadbill is a species in the genus Serilophus.

Although the Silver-breasted Broadbill is currently in decline, the species still retains a vast amount of land and population. Species always have ups and downs, so the Silver-breasted Broadbill is still classified as Least Concern (LC).

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Ecology

Habitat

Habitat and Ecology

Systems
  • Terrestrial
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Molecular Biology and Genetics

Molecular Biology

Statistics of barcoding coverage: Serilophus lunatus

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 0
Specimens with Barcodes: 1
Species With Barcodes: 1
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2012

Assessor/s
BirdLife International

Reviewer/s
Butchart, S. & Symes, A.

Contributor/s

Justification
This species has an extremely large range, and hence does not approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). Despite the fact that the population trend appears to be decreasing, the decline is not believed to be sufficiently rapid to approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size has not been quantified, but it is not believed to approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.
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Population

Population
The global population size has not been quantified, but the species is reported to be locally common to uncommon (Lambert and Woodcock 1996).

Population Trend
Decreasing
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Wikipedia

Silver-breasted broadbill

The silver-breasted broadbill (Serilophus lunatus) is a species of bird in the broadbill family Eurylaimidae. It is monotypic (the only species) within the genus Serilophus.[2] There are ten currently recognised subspecies, one of which, rubropygius, was formerly treated as a separate species.

It is found in Bangladesh, Bhutan, Cambodia, China, India, Indonesia, Laos, Malaysia, Myanmar, Nepal, Thailand, and Vietnam. Its natural habitats are subtropical or tropical moist lowland forests and subtropical or tropical moist montane forests. The species has declined somewhat due to habitat loss, but is not considered to be threatened with extinction.[1]

Description[edit]

The silver-breasted broadbill is a medium-sized broadbill, 16–17 centimetres (6.3–6.7 in) in length and weighing 25–35 grams (0.9–1.2 oz). The plumage of the nominate race has a rusty-coloured head with an ash-grey forehead and a broad black supercilium (stripe) over the eye. The breast and belly is white and the rump and upper wing coverts are bright rufous. The flight feathers are striking blue and black and the tail is black. There is a small amount of sexual dimorphism in the plumage, with the female having a narrow silver band across the breast. Young birds resemble adults but with shorter wings and tails, and slightly darker plumage overall. There is also some variation across the different subspecies.[3]

Habitat[edit]

The silver-breasted broadbill occupies a range of forest habitats. It occurs in tropical and semi-tropical forests, as well as semi-deciduous forests and forests dominated by pine, oak and bamboo. It may occur in selectively logged forests and even entered agricultural land and gardens. It occurs at a range of elevations across its range; between 800–2,000 metres (2,600–6,600 ft) in Sumatra but 300–700 m (980–2,300 ft) in China.[3]

References[edit]

  1. ^ a b BirdLife International (2012). "Serilophus lunatus". IUCN Red List of Threatened Species. Version 2013.2. International Union for Conservation of Nature. Retrieved 26 November 2013. 
  2. ^ "ITIS Report: Serilophus". Integrated Taxonomic Information System. Retrieved 11 August 2014. 
  3. ^ a b Bruce, Murray (2003). "Family Eurylaimidae (Broadbills)". In Josep del Hoyo, Andrew Elliott & David Christie. Handbook of the Birds of the World. Volume 8, Broadbills to Tapaculos. Barcelona: Lynx Edicions. pp. 54–81. ISBN 84-87334-50-4. 
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