The sooty-capped hermit (Phaethornis augusti) is a species of bird in the family Trochilidae, the hummingbirds. It is found in Brazil, Colombia, French Guiana, Guyana, Suriname, and Venezuela.[3][4]
| Sooty-capped hermit | |
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Clade: | Strisores |
| Order: | Apodiformes |
| Family: | Trochilidae |
| Genus: | Phaethornis |
| Species: | P. augusti
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| Binomial name | |
| Phaethornis augusti (Bourcier, 1847)
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Taxonomy and systematics
editThe sooty-capped hermit is closely related to the planalto hermit (P. pretrei) and may form a superspecies with it. Three subspecies of sooty-capped hermit are recognized, the nominate P. a. augusti, P. a. curiosus, and P. a incanescens. A fourth proposed subspecies P. a. vicarius, in the Colombian Andes, cannot be separated from the nominate.[5][3][6]
Description
editThe sooty-capped hermit is about 14 to 15 cm (5.5 to 5.9 in) long. Males weigh 4.5 to 6 g (0.16 to 0.21 oz) and females 4 to 5 g (0.14 to 0.18 oz). They are mostly grayish brown above with a rufous rump and uppertail coverts. The next-to-inner tail feathers are longer than the others and all have white tips. Their underparts are gray. The face has a black "mask" with a white supercilium and gular stripe. The subspecies differ slightly in the intensity of the breast and uppertail covert colors and the size of the gular stripe.[6] What was once thought to be a separate species P. fumosus was determined to be a melanistic morph of the nominate sooty-capped hermit.[5]
Distribution and habitat
editMajor taxonomic systems place the nominate subspecies of sooty-capped hermit in Venezuela's Coastal Range and eastern Andes and south on the eastern slope of Colombia's Eastern Andes; P. a. curiosus in the isolated Sierra Nevada de Santa Marta of northeastern Colombia; and P. a incanescens on the tepuis of southern Venezuela, western Guyana, and Brazil's Roraima state.[3][7][6] The South American Classification Committee (SACC) of the American Ornithological Society places the species in those four countries and also French Guiana and Suriname.[4]
Behavior
editMovement
editThe sooty-capped hermit is thought to be mostly sedentary, but some seasonal vertical movement has been documented.[6]
Feeding
editThe sooty-capped hermit is a "trap-line" feeder like other hermit hummingbirds, visiting a circuit of flowering plants for nectar. It also consumes small arthropods, and has been observed catching them in buildings.[6]
Breeding
editActive nests of the sooty-capped hermit have been found in Venezuela between February and July and also between September and December. The nest is a cone-shaped cup; a typical one was made of moss and spider web with pieces of dried mud on the outer wall. It was suspended by a single stout cable of spider silk from a nail in a storehouse. Nests may be reused multiple times within a season. The clutch size is two eggs.[6]
Vocalization
editThe sooty-capped hermit's song is "a continuously repeated phrase consisting of 2–3 high notes followed by 2–3 somewhat lower ones, e.g. 'tsee-tsee-tsee-sew-sew....tsee-tsee-tsee-sew-sew...'." The male sings from a perch at a lek while wagging its tail. It also makes a "rather monotonous 'tseet'" call.[6]
Status
editThe IUCN has assessed the sooty-capped hermit as being of Least Concern; though its population size is unknown it is believed to be stable.[1] It is considered locally uncommon to common and seems "to adapt well to habitats modified by man".[6]
References
edit- ^ a b BirdLife International (2018). "Sooty-capped Hermit Phaethornis augusti". IUCN Red List of Threatened Species. 2018: e.T22686973A130116071. doi:10.2305/IUCN.UK.2018-2.RLTS.T22686973A130116071.en. Retrieved 29 November 2021.
- ^ "Appendices | CITES". cites.org. Retrieved 2022-01-14.
- ^ a b c Gill, F.; Donsker, D.; Rasmussen, P. (July 2021). "IOC World Bird List (v 11.2)". Retrieved July 14, 2021.
- ^ a b 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 August 2021. Species Lists of Birds for South American Countries and Territories. https://www.museum.lsu.edu/~Remsen/SACCCountryLists.htm retrieved August 24, 2021
- ^ a b 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 August 2021. A classification of the bird species of South America. American Ornithological Society. https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm retrieved August 24, 2021
- ^ a b c d e f g h Hinkelmann, C., P. F. D. Boesman, and G. M. Kirwan (2020). Sooty-capped Hermit (Phaethornis augusti), 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.socher1.01 retrieved November 29, 2021
- ^ Clements, J. F., T. S. Schulenberg, M. J. Iliff, S. M. Billerman, T. A. Fredericks, J. A. Gerbracht, D. Lepage, B. L. Sullivan, and C. L. Wood. 2021. The eBird/Clements checklist of Birds of the World: v2021. Downloaded from https://www.birds.cornell.edu/clementschecklist/download/ Retrieved August 25, 2021
External links
edit- [1] A photograph of a nest (Wikiaves)