The puff-throated babbler or spotted babbler (Pellorneum ruficeps) is a species of passerine bird found in Asia. They are found in scrub and moist forest mainly in hilly regions. They forage in small groups on the forest floor, turning around leaf litter to find their prey and usually staying low in the undergrowth where they can be hard to spot. However, they have loud and distinct calls, including a morning song, contact and alarm calls. It is the type species of the genus Pellorneum which may, however, currently include multiple lineages.
| Puff-throated babbler | |
|---|---|
| |
| P. r. dusiti (Khao Yai National Park, Thailand) | |
| Calls (nominate race from India) | |
Scientific classification 
| |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Order: | Passeriformes |
| Family: | Pellorneidae |
| Genus: | Pellorneum |
| Species: | P. ruficeps
|
| Binomial name | |
| Pellorneum ruficeps Swainson, 1832
| |
Description
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Puff-throated babblers are brown above, and white below with heavily brown streaks towards the breast and belly. They have a chestnut crown, long buff supercilium and dusky cheeks. The throat is white, and is sometimes puffed out giving it the English name. Puff-throated babblers have strong legs, and spend a lot of time on the forest floor. They can often be seen creeping through undergrowth in search of their insect food, looking at first glance like a song thrush. Some subspecies have streaks on the mantle while others, especially in Peninsular India, are unstreaked.[2]
The widespread distribution with population variations has led to nearly thirty subspecies being described. The nominate population is found in peninsular India (excluding the Western Ghats). The population in the northern Eastern Ghats is paler and has been called pallidum while a well-marked dark form occurs in the southern Western Ghats, which has been named granti (includes olivaceum). The western Himalayas population is punctatum (includes jonesi) and in the east is mandellii, which has streaking on the back and nape as well as having call differences. In the east of India, south of the Brahmaputra River occurs chamelum while ripley is found in a small region in eastern Assam (Margherita). Further east in Manipur is vocale and pectorale in Arunachal Pradesh and northern Burma with stageri further south, followed by hilarum, victoriae and minus. Further east are found shanense, subochraceum, insularum, indistinctum, chtonium, elbeli, acrum, oreum, dusiti, vividum, ubonense, euroum, deignani, dilloni and smithi. Several others have been described and many populations are difficult to assign to subspecies.[3] This is the type species for the genus Pellorneum and its generic placement is assured, although other species currently included in the genus may be reassigned.[4][5][6]
Distribution and habitat
editThis bird is a common resident breeder in the Himalayas and the forests of Asia. Like most babblers, it is not migratory, and has short rounded wings and a weak flight. Its habitat is scrub and bamboo thickets and it forages by turning over leaves to find insects.[2]
Behaviour and ecology
editPuff-throated babblers vocalize often. Their calls are a series of whistling notes ascending in scale. Some calls have been transcribed as he'll beat you, pret-ty-sweet. The calling can be persistent. The breeding season is mainly during the rainy season. They build a nest on the ground at the base of a bush. The nest is dome-shaped and constructed of leaves and twigs with an entrance on the side. The opening usually points downhill when the nest is on sloping ground. The clutch varies from 2 to 5 eggs, with northern populations tending towards larger clutches. Parent birds run rodent-like in the undergrowth as they move in and out of the nest. Young birds fledge and leave the nest about 12 to 13 days after hatching.[2][7][8][9]
References
edit- ^ BirdLife International (2016). "Pellorneum ruficeps". IUCN Red List of Threatened Species. 2016: e.T22715859A94471991. doi:10.2305/IUCN.UK.2016-3.RLTS.T22715859A94471991.en. Retrieved 12 November 2021.
- ^ a b c Ali, Salim & S.D. Ripley (1996). Handbook of the Birds of India and Pakistan. Volume 6 (2nd ed.). New Delhi: Oxford University Press. pp. 114–122.
- ^ Mayr E; R A Paynter Jr, eds. (1964). Check-list of Birds of the World. Volume 10. Cambridge, Massachusetts: Museum of Comparative Zoology. pp. 241–245.
- ^ Jønsson, Knud A. & Fjeldså, Jon (2006). "A phylogenetic supertree of oscine passerine birds (Aves: Passeri)". Zoologica Scripta. 35 (2): 149–186. doi:10.1111/j.1463-6409.2006.00221.x. S2CID 85317440.
- ^ Rasmussen PC & JC Anderton (2005). Birds of South Asia. The Ripley Guide. Volume 2. Washington DC and Barcelona: Smithsonian Institution & Lynx Edicions. pp. 425–426.
- ^ Baker, ECS (1922). Fauna of British India, including Ceylon and Burma. Birds. Volume 1 (2nd ed.). London: Taylor and Francis. pp. 238–242.
- ^ Whistler, Hugh. Popular Handbook of Indian Birds (4th ed.). London: Gurney and Jackson. pp. 53–54.
- ^ Betham R M (1903). "The nest of the Yellow-browed Bulbul (Iole icterica) and the Spotted Babbler (Pellorneum ruficeps)". J. Bombay Nat. Hist. Soc. 15 (2): 346–347.
- ^ Hume AO (1889). Oates, EW (ed.). The nests and eggs of Indian Birds. Volume 1 (2nd ed.). London: R H Porter. p. 100.