Buff-bellied hermit

The buff-bellied hermit (Phaethornis subochraceus) is a species of bird in the family Trochilidae, the hummingbirds. It is found in Bolivia and Brazil.[3][4]

Buff-bellied hermit
CITES Appendix II (CITES)[2]
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Clade: Dinosauria
Class: Aves
Clade: Strisores
Order: Apodiformes
Family: Trochilidae
Genus: Phaethornis
Species:
P. subochraceus
Binomial name
Phaethornis subochraceus
Todd, 1915

Taxonomy and systematics

The buff-bellied hermit is closely related to the sooty-capped hermit (P. augusti) and planalto hermit (P. pretrei).[5] It is monotypic.[3]

Description

The buff-bellied hermit is 11 to 12 cm (4.3 to 4.7 in) long and weighs 3.5 to 4 g (0.12 to 0.14 oz). It has metallic green upperparts and ochre to buff underparts. The innermost pair of tail feathers are longer than the others and all have white tips.[5]

Distribution and habitat

The buff-bellied hermit is found in the eastern Andean foothills of Bolivia from southern Beni to eastern Santa Cruz departments and into the Brazilian states of Mato Grosso and Mato Grosso do Sul.[5] It has also been recorded as a vagrant in Paraguay.[4] It inhabits the understory of several landscapes including deciduous and semi-deciduous forest, secondary forest, open woodland, and shrubland. In elevation it ranges from 150 to 800 m (490 to 2,600 ft).[5]

Behavior

Movement

Observations of the buff-bellied hermit in eastern Bolivia showed no evidence of movement.[5]

Feeding

The buff-bellied hermit feeds on nectar from a wide variety of flowering plants and also on small arthropods.[5]

Breeding

The buff-bellied hermit's breeding season has not been conclusively determined, but observations hint that it is during the November to April wet season. Males congregate at leks. The nest has not been described.[5]

Vocalization

The buff-bellied hermit's song is "a continuously repeated high-pitched phrase...a short note followed by a rising one...or a short note followed by a falling one 'tsi-tsew', up to a more complex 'tsi-tsi-tseeé-euw'."[5]

Status

The IUCN has assessed the buff-bellied hermit as being of Least Concern, though its population size is unknown and believed to be decreasing.[1] It is locally common but "[p]oorly known, and should perhaps be classed as Data Deficient."[5]

References
  1. BirdLife International (2018). "Buff-bellied Hermit Phaethornis subochraceus". IUCN Red List of Threatened Species. 2018: e.T22686979A130116474. doi:10.2305/IUCN.UK.2018-2.RLTS.T22686979A130116474.en. Retrieved 29 November 2021.
  2. "Appendices | CITES". cites.org. Retrieved 2022-01-14.
  3. Gill, F.; Donsker, D.; Rasmussen, P. (July 2021). "IOC World Bird List (v 11.2)". Retrieved July 14, 2021.
  4. 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
  5. Hinkelmann, C., P. F. D. Boesman, and G. M. Kirwan (2020). Buff-bellied Hermit (Phaethornis subochraceus), 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.bubher1.01 retrieved November 29, 2021
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