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Chestnut-collared swift

February 24, 2023

The chestnut-collared swift (Streptoprocne rutila) is a species of bird in subfamily Cypseloidinae of the swift family Apodidae. It is found from Mexico and Trinidad south to Peru and Bolivia.[3][4]

Chestnut-collared swift
An adult male on the nest.
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Clade: Strisores
Order: Apodiformes
Family: Apodidae
Genus: Streptoprocne
Species:
S. rutila
Binomial name
Streptoprocne rutila
(Vieillot, 1817)
Range of Streptoprocne rutila
Synonyms[2]
  • Cypseloides rutilus
  • Chaetura rutila

Taxonomy and systematics

The chestnut-collared swift has at various times been placed in genera Cypseloides and Chaetura.[2] These three subspecies are recognized:[3]

Subspecies S. r. brunnitorques has been treated as a separate species, but it is now (2020) suspected of not being even a separate subspecies, as "no clear diagnosis of distinctions between brunnitorques and rutila has been published."[5][6]

Description

The chesnut-collared swift is one of the smaller members of genus Streptoprocne. It is 12 to 14 cm (4.7 to 5.5 in) long and weighs about 21 g (0.74 oz). It has a wide slightly notched tail and broad wings. Adult males of the nominate subspecies S. r. rutila have a sooty blackish brown crown, a blackish brown back, slightly paler rump and uppertail coverts, and a sooty blackish brown tail. They have a narrow black patch around the eye and grayish brown cheeks, chin, and throat with some dull rufous feathers mixed in. They have a wide rufous collar across the lower throat and upper breast that extends around to the nape. The upper side of their wing is shades of black and the underside slightly lighter. Their underparts are a paler blackish brown than the upperparts. Adult females have paler body plumage than males and have a much smaller rufous collar or none at all. Juveniles resemble adult females but are paler overall.[6]

Subspecies S. r. griseifrons has sooty gray rather than almost black upperparts, sooty grayish brown underparts, and pale gray fringes on most facial feathers. Subspecies S. r. brunnitorques is essentially indistinguishable from the nominate.[6]

Distribution and habitat

The subspecies of chestnut-collared swift are distributed thus:[3][6]

  • S. r. griseifrons, western Mexico from Sinaloa, Durango and Zacatecas south to Oaxaca
  • S. r. brunnitorques, southeastern Mexico through Central America and along the Andes of Colombia, Ecuador, Bolivia, and Peru
  • S. r. rutila, Andes and Coastal Ranges of Venezuela; Trinidad

The exact extent of each range is imperfectly known. Some specimens attributed to S. r. griseifrons have been collected in Venezuela and much further south, though few taxonomists agree with those identifications. Other taxonomists extend the range of S. r. brunnitorques into Venezuela, an area which most assign to S. r. rutila, and some have proposed that brunnitorques should be merged into rutila.[6]

The chestnut-collared swift inhabits a variety of landscapes including humid montane and pine-oak forests, semi-deciduous forest, evergreen forest, semi-open areas, and small human communities. In elevation it ranges from a few hundred meters above sea level to as high as 3,000 m (9,800 ft) in Mexico and northern Central America, 2,500 m (8,200 ft) in Costa Rica and Colombia, 2,700 m (8,900 ft) in Ecuador, and 3,100 m (10,200 ft) in Bolivia.[6]

Behavior

Movement

The chestnut-collared swift is a year-round resident throughout its range, though it apparently makes some local seasonal movements.[6]

Feeding

Like all swifts, the chestnut-collared is an aerial insectivore. Details of its diet are lacking but it is known to feed on several families of insects. Some studies have shown a preference for flying ants and others for small beetles; their results may represent local or temporal availability. It often forages in flocks of 10 to 20 birds and sometimes much higher numbers. It sometimes forages with other swift species and tends to stay near the top of such mixed-species flocks.[6]

Breeding

The chestnut-collared swift's breeding season varies with latitude but generally is within May to August north of the equator; the season at and below the equator has not been determined. It builds a nest of mud and plant material such as moss, liverwort, and fern on small ledge or niche of a rock wall in a damp shady location near water, such as in a cave, under a bridge, or in a culvert. The clutch size is two eggs. Both parents incubate the eggs for 22 to 23 days and fledging occurs at five to six weeks after hatch.[6]

 

Songs and calls
Listen to chestnut-collared swift on xeno-canto

Vocalization

One description of the chesnut-collared swift's flight call is "buzzy...like electric crackles or static, occasionally strung into a chatter: bzzzz'tzz'tzz'tzz zz zzzz zzzzz zzzz."[6]

Status

The IUCN has assessed the chestnut-collared swift as being of Least Concern. It has a very large range and an estimated population of at least 50,000 mature individuals, though the latter is believed to be decreasing. No immediate threats have been identified.[1] "Human activity probably has little effect on Chestnut-collared Swift".[6]

References

  1. ^ a b BirdLife International (2020). "Chestnut-collared Swift Streptoprocne rutila". IUCN Red List of Threatened Species. 2020: e.T22686424A168003265. doi:10.2305/IUCN.UK.2020-3.RLTS.T22686424A168003265.en. Retrieved 2 October 2022.
  2. ^ a b "Check-list of North and Middle American Birds". American Ornithological Society. August 2022. Retrieved August 9, 2022.
  3. ^ a b c Gill, F.; Donsker, D.; Rasmussen, P., eds. (August 2022). "Owlet-nightjars, treeswifts, swifts". IOC World Bird List. v 12.2. Retrieved August 9, 2022.
  4. ^ 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
  5. ^ 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. A classification of the bird species of South America. American Ornithological Society. https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm retrieved July 24, 2022
  6. ^ a b c d e f g h i j k Schulenberg, T. S. and C. Shaw (2020). Chestnut-collared Swift (Streptoprocne rutila), version 1.0. In Birds of the World (T. S. Schulenberg, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. https://doi.org/10.2173/bow.chcswi1.01 retrieved October 2, 2022

External links

  •   Media related to Streptoprocne rutila at Wikimedia Commons
  •   Data related to Streptoprocne rutila at Wikispecies

Further reading

  • Chantler, Phil & Driessens, Gerald (2000): Swifts: a Guide to the Swifts and Treeswifts of the World. Pica Press, Mountfield, East Sussex. ISBN 1-873403-83-6
  • ffrench, Richard; O'Neill, John Patton & Eckelberry, Don R. (1991): A Guide to the Birds of Trinidad and Tobago (2nd edition). Comstock Publishing, Ithaca, N.Y.. ISBN 0-8014-9792-2
  • Hilty, Steven L. (2003): Birds of Venezuela. Christopher Helm, London. ISBN 0-7136-6418-5


February 24, 2023
chestnut, collared, swift, chestnut, collared, swift, streptoprocne, rutila, species, bird, subfamily, cypseloidinae, swift, family, apodidae, found, from, mexico, trinidad, south, peru, bolivia, adult, male, nest, conservation, statusleast, concern, iucn, sci. The chestnut collared swift Streptoprocne rutila is a species of bird in subfamily Cypseloidinae of the swift family Apodidae It is found from Mexico and Trinidad south to Peru and Bolivia 3 4 Chestnut collared swiftAn adult male on the nest Conservation statusLeast Concern IUCN 3 1 1 Scientific classificationKingdom AnimaliaPhylum ChordataClass AvesClade StrisoresOrder ApodiformesFamily ApodidaeGenus StreptoprocneSpecies S rutilaBinomial nameStreptoprocne rutila Vieillot 1817 Range of Streptoprocne rutilaSynonyms 2 Cypseloides rutilus Chaetura rutila Contents 1 Taxonomy and systematics 2 Description 3 Distribution and habitat 4 Behavior 4 1 Movement 4 2 Feeding 4 3 Breeding 4 4 Vocalization 5 Status 6 References 7 External links 8 Further readingTaxonomy and systematics EditThe chestnut collared swift has at various times been placed in genera Cypseloides and Chaetura 2 These three subspecies are recognized 3 S r griseifrons Nelson 1900 S r brunnitorques Lafresnaye 1844 S r rutila Vieillot 1817 Subspecies S r brunnitorques has been treated as a separate species but it is now 2020 suspected of not being even a separate subspecies as no clear diagnosis of distinctions between brunnitorques and rutila has been published 5 6 Description EditThe chesnut collared swift is one of the smaller members of genus Streptoprocne It is 12 to 14 cm 4 7 to 5 5 in long and weighs about 21 g 0 74 oz It has a wide slightly notched tail and broad wings Adult males of the nominate subspecies S r rutila have a sooty blackish brown crown a blackish brown back slightly paler rump and uppertail coverts and a sooty blackish brown tail They have a narrow black patch around the eye and grayish brown cheeks chin and throat with some dull rufous feathers mixed in They have a wide rufous collar across the lower throat and upper breast that extends around to the nape The upper side of their wing is shades of black and the underside slightly lighter Their underparts are a paler blackish brown than the upperparts Adult females have paler body plumage than males and have a much smaller rufous collar or none at all Juveniles resemble adult females but are paler overall 6 Subspecies S r griseifrons has sooty gray rather than almost black upperparts sooty grayish brown underparts and pale gray fringes on most facial feathers Subspecies S r brunnitorques is essentially indistinguishable from the nominate 6 Distribution and habitat EditThe subspecies of chestnut collared swift are distributed thus 3 6 S r griseifrons western Mexico from Sinaloa Durango and Zacatecas south to Oaxaca S r brunnitorques southeastern Mexico through Central America and along the Andes of Colombia Ecuador Bolivia and Peru S r rutila Andes and Coastal Ranges of Venezuela TrinidadThe exact extent of each range is imperfectly known Some specimens attributed to S r griseifrons have been collected in Venezuela and much further south though few taxonomists agree with those identifications Other taxonomists extend the range of S r brunnitorques into Venezuela an area which most assign to S r rutila and some have proposed that brunnitorques should be merged into rutila 6 The chestnut collared swift inhabits a variety of landscapes including humid montane and pine oak forests semi deciduous forest evergreen forest semi open areas and small human communities In elevation it ranges from a few hundred meters above sea level to as high as 3 000 m 9 800 ft in Mexico and northern Central America 2 500 m 8 200 ft in Costa Rica and Colombia 2 700 m 8 900 ft in Ecuador and 3 100 m 10 200 ft in Bolivia 6 Behavior EditMovement Edit The chestnut collared swift is a year round resident throughout its range though it apparently makes some local seasonal movements 6 Feeding Edit Like all swifts the chestnut collared is an aerial insectivore Details of its diet are lacking but it is known to feed on several families of insects Some studies have shown a preference for flying ants and others for small beetles their results may represent local or temporal availability It often forages in flocks of 10 to 20 birds and sometimes much higher numbers It sometimes forages with other swift species and tends to stay near the top of such mixed species flocks 6 Breeding Edit The chestnut collared swift s breeding season varies with latitude but generally is within May to August north of the equator the season at and below the equator has not been determined It builds a nest of mud and plant material such as moss liverwort and fern on small ledge or niche of a rock wall in a damp shady location near water such as in a cave under a bridge or in a culvert The clutch size is two eggs Both parents incubate the eggs for 22 to 23 days and fledging occurs at five to six weeks after hatch 6 Songs and callsListen to chestnut collared swift on xeno canto Vocalization Edit One description of the chesnut collared swift s flight call is buzzy like electric crackles or static occasionally strung into a chatter bzzzz tzz tzz tzz zz zzzz zzzzz zzzz 6 Status EditThe IUCN has assessed the chestnut collared swift as being of Least Concern It has a very large range and an estimated population of at least 50 000 mature individuals though the latter is believed to be decreasing No immediate threats have been identified 1 Human activity probably has little effect on Chestnut collared Swift 6 References Edit a b BirdLife International 2020 Chestnut collared Swift Streptoprocne rutila IUCN Red List of Threatened Species 2020 e T22686424A168003265 doi 10 2305 IUCN UK 2020 3 RLTS T22686424A168003265 en Retrieved 2 October 2022 a b Check list of North and Middle American Birds American Ornithological Society August 2022 Retrieved August 9 2022 a b c Gill F Donsker D Rasmussen P eds August 2022 Owlet nightjars treeswifts swifts IOC World Bird List v 12 2 Retrieved 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 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 A classification of the bird species of South America American Ornithological Society https www museum lsu edu Remsen SACCBaseline htm retrieved July 24 2022 a b c d e f g h i j k Schulenberg T S and C Shaw 2020 Chestnut collared Swift Streptoprocne rutila version 1 0 In Birds of the World T S Schulenberg Editor Cornell Lab of Ornithology Ithaca NY USA https doi org 10 2173 bow chcswi1 01 retrieved October 2 2022External links Edit Media related to Streptoprocne rutila at Wikimedia Commons Data related to Streptoprocne rutila at WikispeciesFurther reading EditChantler Phil amp Driessens Gerald 2000 Swifts a Guide to the Swifts and Treeswifts of the World Pica Press Mountfield East Sussex ISBN 1 873403 83 6 ffrench Richard O Neill John Patton amp Eckelberry Don R 1991 A Guide to the Birds of Trinidad and Tobago 2nd edition Comstock Publishing Ithaca N Y ISBN 0 8014 9792 2 Hilty Steven L 2003 Birds of Venezuela Christopher Helm London ISBN 0 7136 6418 5 Retrieved from https en wikipedia org w index php title Chestnut collared swift amp oldid 1126385734, wikipedia, wiki, book, books, library,

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