Costa's hummingbird

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Costa's hummingbird
Hummingbird.jpg
Costas Hummingbird female RWD2.jpg
Male above, female below
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: Calypte
Species:
C. costae
Binomial name
Calypte costae
(Bourcier, 1839)
Calypte costae map.svg
Range of C. costae
  Breeding range
  Year-round range
  Wintering range

Costa's hummingbird (Calypte costae) is a bird species in the hummingbird family Trochilidae. [3] It breeds in the arid region of the southwest United States and northwest Mexico; it winters in western Mexico. [3]

Contents

Taxonomy

Costa's hummingbird was formally described by the French ornithologist Jules Bourcier in 1839 and given the binomial name Ornismya costae. [4] Bourcier chose the specific epithet to honour the French nobleman Louis Marie Pantaleon Costa, Marquis de Beauregard (1806–1864). [5] The type locality is Magdalena Bay on the western coast of the Mexican state of Baja California Sur. [6] Costa's hummingbird is now placed in the genus Calypte that was introduced in 1856 by John Gould. [7] [8] The species is monotypic: no subspecies are recognised. [8]

Hybrids between this species and Anna's hummingbird, the black-chinned hummingbird as well as the broad-tailed hummingbird are known. [9]

Description

This species is small, as a mature adult grows to only 3–3.5 in (7.6–8.9 cm) in length, with a wingspan of 11 cm, [10] and an average weight of 3.05 g for males and 3.22 g for females. [3] [11] The male has a mainly green back and flanks, a small black tail and wings, and patches of white below their gorgeted throat and tail. Its most distinguishing feature is its vibrant purple cap and throat with the throat feathers flaring out and back behind its head. [3] The female is not as distinct as the male, having grayish-green above with a white underbelly. [3]

Distribution and habitat

Costa's hummingbird is common in the arid brushy deserts and gardens of the Southwestern United States and the Baja California Peninsula of Mexico. [3]

Behavior

Breeding

Male Costa's hummingbird Unidentified hummingbird by Pete Gregoire (9363245042).jpg
Male Costa's hummingbird

The male Costa's hummingbird's courtship display is a spirited series of swoops and arcing dives, using an angle to the sun to display its violet extendedgorget to prospective mates. [12] The male makes a high-speed dive pass or hover close to the female, perched on a nearby branch, and is accented by a high-pitched vibration that is produced by tail feathers. Separately, the male will perch and produce a high-pitched, scratch-like song. [3]

The female constructs a small cup-shaped nest out of plant fibers, down, and at times spider silk, coated with lichen to hold it together. [13] The nest is situated on a yucca stalk or tree limb. The female lays just two eggs, which are white in color, which she will incubate for 15 to 18 days before the young hatch. The young leave the nest after 20 to 23 days.

Diet

As common with hummingbird species, Costa's hummingbird feeds on flower nectar and small insects. While feeding in flight, a Costa's hummingbird may hover.

Torpor

As with other hummingbird species, the Costa's hummingbird can slow its metabolism during cold nights when it enters a hibernation-like state known as torpor, with its heart rate and respiration slowing substantially. [3]

Conservation

The IUCN describes them as of least concern. The population is stable and there are no known threats. They are found in at least one protected area. [14]

Related Research Articles

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References

  1. BirdLife International (2016). "Calypte costae". IUCN Red List of Threatened Species . 2016: e.T22688202A93187017. doi: 10.2305/IUCN.UK.2016-3.RLTS.T22688202A93187017.en . Retrieved 12 November 2021.
  2. "Appendices | CITES". cites.org. Retrieved 2022-01-14.
  3. 1 2 3 4 5 6 7 8 "Costa's hummingbird". All About Birds, Cornell University. 2023. Retrieved 27 December 2023.
  4. Bourcier, Jules (1839). "Description de quelques espèces nouvelles d'oiseaux-mouches". Revue Zoologique (in French). 2: 294–295 [294].
  5. Jobling, James A. (2010). The Helm Dictionary of Scientific Bird Names. London: Christopher Helm. p. 120. ISBN   978-1-4081-2501-4.
  6. Peters, James Lee, ed. (1945). Check-List of Birds of the World. Vol. 5. Cambridge, Massachusetts: Harvard University Press. pp. 136–137.
  7. Gould, John (1856). A Monograph of the Trochilidae, or Family of Humming-Birds. Vol. 4. London: self. Plates 134, 135, 136 and text (Part 11, Plates 5, 6 and 7). The 5 volumes were issued in 25 parts between 1849 and 1861. Title pages of all volumes bear the date of 1861.
  8. 1 2 Gill, Frank; Donsker, David; Rasmussen, Pamela, eds. (January 2021). "Hummingbirds". IOC World Bird List Version 11.1. International Ornithologists' Union. Retrieved 1 March 2021.
  9. Huey, Laurence M. (1944). "A hybrid Costa's x Broad-tailed hummingbird" (PDF). The Auk . 61 (4): 636–637. doi:10.2307/4080185. JSTOR   4080185.
  10. Oiseaux.net. "Colibri de Costa - Calypte costae - Costa's Hummingbird". www.oiseaux.net. Retrieved 2020-09-26.
  11. "Costa's hummingbird". www.hummingbirds.net. Retrieved 2020-09-26.
  12. "No CGI here: The Costa's hummingbird woos mates with this freaky face". Earth Touch News Network. 2014.
  13. Woods, Robert S. (1922). "The development of young Costa hummingbirds" (PDF). The Condor. 24 (6): 189–193. doi:10.2307/1362578. JSTOR   1362578.
  14. "The IUCN Red List of Threatened Species". IUCN Red List of Threatened Species.