pale-rumped swift
{{short description|Species of bird}}
{{Use American English|date=October 2022}}
{{speciesbox
| name = Pale-rumped swift
| image =
| status = LC
| status_system = IUCN3.1
| genus = Chaetura
| species = egregia
| authority = Todd, 1916
| range_map = Chaetura egregia map.svg
}}
The pale-rumped swift (Chaetura egregia) is a species of bird in subfamily Apodinae of the swift family Apodidae.{{cite web |url=https://www.worldbirdnames.org/new/bow/swifts/ |title=Owlet-nightjars, treeswifts, swifts |website=IOC World Bird List |version =v 12.2 |editor-last1=Gill |editor-first1= F. |editor-last2=Donsker|editor-first2=D.|editor-last3=Rasmussen |editor-first3=P. |date=August 2022 |access-date=August 9, 2022 }}HBW and BirdLife International (2021) Handbook of the Birds of the World and BirdLife International digital checklist of the birds of the world. Version 6. Available at: http://datazone.birdlife.org/userfiles/file/Species/Taxonomy/HBW-BirdLife_Checklist_v6_Dec21.zip retrieved August 7, 2022 It is found in Bolivia, Brazil, Colombia, Ecuador, and Peru.Remsen, J. V., Jr., J. I. Areta, E. Bonaccorso, S. Claramunt, A. Jaramillo, D. F. Lane, J. F. Pacheco, M. B. Robbins, F. G. Stiles, and K. J. Zimmer. Version 24 July 2022. Species Lists of Birds for South American Countries and Territories. https://www.museum.lsu.edu/~Remsen/SACCCountryLists.htm retrieved July 24, 2022
Taxonomy and systematics
The pale-rumped swift has at times been treated as conspecific with the grey-rumped swift (C. cinereiventris). The two of them, the band-rumped swift (C. spinicaudus), and the Lesser Antillean swift (C. martinica) were at one time placed in genus Acanthylis.Chantler, P. and P. F. D. Boesman (2020). Pale-rumped Swift (Chaetura egregia), version 1.0. In Birds of the World (J. del Hoyo, A. Elliott, J. Sargatal, D. A. Christie, and E. de Juana, Editors). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.parswi1.01 retrieved October 6, 2022 The pale-rumped swift is monotypic.
Description
The pale-rumped swift is about {{convert|10.5|cm|in|sigfig=2|abbr=on}} long and weighs about {{convert|23|g|oz|sigfig=2|abbr=on}}. It has a protruding head, a short square tail, and wings that bulge in the middle and somewhat hook at the end. The sexes are alike. Their upperparts are black with a bronze gloss and a whitish rump and uppertail coverts. Their underparts are mostly dark, with a pale throat and blackish undertail coverts.
Distribution and habitat
The pale-rumped swift is found in eastern Ecuador, eastern Peru, western Brazil, and northwestern Bolivia and has been recorded as a vagrant in Colombia. It principally inhabits lowland tropical evergreen forest but also occurs over more open landscapes and urban areas.
Behavior
=Movement=
=Feeding=
=Breeding=
Nothing is known about the pale-rumped swift's breeding phenology and its nest and eggs have not been described.
{{birdsong|url=https://xeno-canto.org/species/Chaetura-egregia |species=pale-rumped swift}}
=Vocalization=
Status
The IUCN has assessed the pale-rumped swift as being of Least Concern, though its population size is not known and is believed to be decreasing. No immediate threats have been identified. It is generally thought to be one of the rarer members of genus Chaetura but at least in parts of Peru it is more common than some of the others and is abundant in parts of Ecuador.