Archbold's Owlet-nightjar

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Archbold's Owlet-nightjar
File:Archbold's Owlet-nighthar art.png
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Superorder: Strisores
Clade: Apodimorphae
Order: Apodiformes
Family: {{{1}}}
Genus: {{{1}}}
Species: A. archboldi
Binomial name
Aegotheles archboldi
Rand, 1941

Archbold's Owlet-nightjar, Aegotheles archboldi is a species of owlet-nightjar found in New Guinea. It was formerly a subspecies of the Mountain Owlet-nightjar, and is a sister species, replacing it at higher elevations.[2]

Other names[edit]

Eastern Mountain Owlet-nightjar.[3]

Description[edit]

Length is 18–20 cm (7.1–7.9 in) long.[3] Weight is 29–35 g (1.0–1.2 oz).[2]

Not safely identifiable from the Mountain Owlet-nightjar[4], from which even some well-made skins appear inseparable when series are compared under ideal conditions in a museum.[2]

Small, dark, heavily spotted owlet-nightjar with a buff lateral crown stripes and white collar around hind-neck.[3][2] Lacks white markings in wings and tail. Sexes similar[5][3]; immatures and juveniles similar to adults.[3]

Differs mainly from Mountain Owlet-nightjar in richer coloration of upperparts, with coarser dark barring (as opposed to vermiculations)[5] and coarser white spots, and in underparts averaging darker, more richly coloured and more heavily marked.[2]

Identification is even further complicated as both species have a rufous morph and a brown morph, connected by intermediates.[2]

Similar species[edit]

Mountain Owlet-nightjar is generally less boldly spotted whitish.[3]

Behaviour[edit]

Diet[edit]

Unknown, other than a specimen having small insects in its stomach contents.[5]

Calls[edit]

Not described.[2][3]

Reproduction[edit]

Not data; eggs and downy chick not described.[3]

Distribution/habitat[edit]

Central West Papua and West-central Papua New Guinea.[3] Sedentary[3], but information scanty.[2]

Although species is known only from four small regions, it was apparently plentiful in some of them during the period from 1940s to 1960s, and extensive montane forests still remain there, and henceforth, unlikely to be threatened in the immediate future.[2]

Habitat is montane forests from 2,000–3,600 metres (6,600–11,800 ft),[3] reports from lower elevations may result from natives carry specimens down from higher ground.[2] Probably lives at subalpine thickets at the upper limit of its range.[2]

References[edit]

  1. ^ BirdLife International (2012). "Aegotheles archboldi". IUCN Red List of Threatened Species. Version 2013.2. International Union for Conservation of Nature. Retrieved 26 November 2013. {{cite web}}: Invalid |ref=harv (help)
  2. ^ a b c d e f g h i j k (Subscription required) Holyoak, D.T. & Kirwan, G.M. (2012). Archbold’s Owlet-nightjar (Aegotheles archboldi). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.) (2012). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from http://www.hbw.com/node/55136 on 22 March 2015).
  3. ^ a b c d e f g h i j k Cleere, Nigel (2010). Nightjars, Potoos, Frogmouths, Oilbird and Owlet-nightjars of the World. Princeton University Press. ISBN 9780691148571.
  4. ^ Pratt, Thane K.; Beehler, Bruce M.; Anderton, John C. (illu.); and Kókay, Szabolcs (illu.) (2014). Birds of New Guinea: Second Edition. Princeton University Press. ISBN 0691095639.{{cite book}}: CS1 maint: multiple names: authors list (link)
  5. ^ a b c Holyoak, D.T. (2001) Nightjars and Their Allies: The Caprimulgiformes. Oxford University Press, Oxford.

External links[edit]

Projects

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File:Paw 1.png This article is part of Project Aves, a All Birds project that aims to write comprehensive articles on each bird, including made-up species.
This article is part of Project Apodiformes, a All Birds project that aims to write comprehensive articles on each hummingbird, swift and tree swift, including made-up species.
File:Australian Owlet-nightjar.png This article is part of Project Aegothelidae, a All Birds project that aims to write comprehensive articles on each owlet-nightjar, including made-up species.