Stripe-breasted starthroat

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Stripe-breasted starthroat
Heliomaster squamosus Stripe-breasted Starthroat (M) 01.jpg
SE Brazil (male)
Heliomaster squamosus Stripe-breasted Starthroat (F).jpg
SE Brazil (female)
CITES Appendix II (CITES) [2]
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Aves
Clade: Strisores
Order: Apodiformes
Family: Trochilidae
Genus: Heliomaster
Species:
H. squamosus
Binomial name
Heliomaster squamosus
(Temminck, 1823)

The stripe-breasted starthroat (Heliomaster squamosus) is a species of hummingbird in the "mountain gems", tribe Lampornithini in subfamily Trochilinae. It is endemic to Brazil. [3] [4]

Contents

Taxonomy and systematics

At one time the stripe-breasted starthroat was placed in genus Lepidolarynx but since the mid-1900s has had its current placement in Heliomaster. [5] It is monotypic. [3]

Description

The stripe-breasted starthroat is 11.2 to 12.4 cm (4.4 to 4.9 in) long and weighs 5 to 6.5 g (0.18 to 0.23 oz). Both sexes have a long, slightly decurved, black bill, a white streak behind the eye, and a white "moustache". Both have a forked tail but the female's is less deeply indented than the male's. Males in breeding plumage have bronzy green upperparts with an iridescent green crown. Their gorget is glittering violet and the sides of it flare out. Their underparts are greenish black with a white stripe down the middle. The central tail feathers are black and the rest dark blue-green. After breeding its throat molts to grayish with black spots. Females' upperparts are like the male's. The throat feathers are blackish green with white edges. The chest and belly are grayish with a white stripe down the middle and the flanks are greenish. The tail is green and the outer feathers have a steel blue band near the end and white tips. [6]

Distribution and habitat

The stripe-breasted starthroat is found in eastern Brazil from Pernambuco south to São Paulo state. It has also been recorded as a vagrant in Argentina's Iguazú National Park. It inhabits forest and savannah at elevations from sea level to 800 m (2,600 ft). [6]

Behavior

Movement

The stripe-breasted starthroat is essentially sedentary but may occasionally wander to higher elevations than usual. [6]

Feeding

The stripe-breasted starthroat feeds on nectar from a wide variety of flowering plants. It typically forages between 3 and 8 m (10 and 30 ft) above the ground. It is territorial, but defends flower patches from others of its species more than from other hummingbirds. In addition to nectar, it also feeds on small insects captured by hawking. [6]

Breeding

The stripe-breasted starthroat's breeding season is usually February to April but it has been recorded incubating in November. It makes a small cup nest and usually sites it on a horizontal tree branch 6 to 8 m (20 to 30 ft) above the ground. Some nests have been seen higher, and at least one has been seen on a utility wire. The female incubates the clutch of two eggs for 14 to 16 days and fledging occurs 21 to 24 days after hatch. [6]

Vocalization

What is thought to be the stripe-breasted starthroat's song is "a subdued, buzzy scratchy warble 'bzzzrrrr..bzzzrrr..chi-chi-chi-chi..bzrrr'." It also makes "a liquid 'tsik'" call. [6]

Status

The IUCN originally assessed the stripe-breasted starthroat as Near Threatened but since 2004 has rated it as being of Least Concern. Though its population size is unknown, it is believed to be stable. [1] It is considered to be locally common and occurs in at least one Brazilian national park. [6]

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References

  1. 1 2 BirdLife International (2016). "Heliomaster squamosus". IUCN Red List of Threatened Species . 2016: e.T22688141A93183968. doi: 10.2305/IUCN.UK.2016-3.RLTS.T22688141A93183968.en . Retrieved 14 May 2022.
  2. "Appendices | CITES". cites.org. Retrieved 2022-01-14.
  3. 1 2 Gill, F.; Donsker, D.; Rasmussen, P., eds. (January 2022). "Hummingbirds". IOC World Bird List. v 12.1. Retrieved January 15, 2022.
  4. HBW and BirdLife International (2020) Handbook of the Birds of the World and BirdLife International digital checklist of the birds of the world Version 5. Available at: http://datazone.birdlife.org/userfiles/file/Species/Taxonomy/HBW-BirdLife_Checklist_v5_Dec20.zip [.xls zipped 1 MB] retrieved 27 May 2021
  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 31 January 2022. A classification of the bird species of South America. American Ornithological Society. https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm retrieved February 1, 2022
  6. 1 2 3 4 5 6 7 Schuchmann, K.L., G. M. Kirwan, and P. F. D. Boesman (2020). Stripe-breasted Starthroat (Heliomaster squamosus), 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.stbsta1.01 retrieved 14 May 2022