White-booted racket-tail
| White-booted racket-tail | |
|---|---|
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Scientific classification 
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| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Aves |
| Order: | Apodiformes |
| Family: | Trochilidae |
| Genus: | Ocreatus |
| Species: | O. underwoodii
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| Binomial name | |
| Ocreatus underwoodii (Lesson, 1832)
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The white-booted racket-tail (Ocreatus underwoodii) is a species of hummingbird. It is found in the Andean cordillera of northern Venezuela, western Colombia, and on the eastern slope of the Andes in Ecuador. Long considered the only species in the monotypic genus Ocreatus,[2] the bird is now sometimes split into three species, the white-booted racket-tail, the Peruvian racket-tail, and the rufous-booted racket-tail. Some taxonomists, such as the American Ornithological Society, continue to lump all the species together, calling it the booted racket-tail.
Description[]
Racket-tails have pronounced sexual dimorphism (sexes have different plumage). Only the male has elongated outer rectrices (tail feathers) that are about 7.5 to 9 cm long. These tail feathers have bare shafts with long terminal oval shaped flags that have pointed ends. In perching birds, the rackets are held parallel with a slight overlap of the flags. Both sexes are shining green above with a small white postocular spot. The underparts of the male are also shining green with an iridescent green throat patch that can be seen in good light. The female has white underparts with many large dark green spots and its black tail has white tips. Both sexes have white colored leg puffs (booties), although the male's are longer and fluffier.[3]
References[]
- ^ BirdLife International (2016). "Ocreatus underwoodii". IUCN Red List of Threatened Species. 2016: e.T22687968A93177284. doi:10.2305/IUCN.UK.2016-3.RLTS.T22687968A93177284.en. Retrieved 12 November 2021.
- ^ Hilty, S. L. Birds of Venezuela, Ed. 2. Princeton University Press, 2002. pg. 429.
- ^ Schuchmann, Karl-L.; Weller, André-A.; Jürgens, Dietmar (2016). "Biogeography and taxonomy of racket-tail hummingbirds (Aves: Trochilidae: Ocreatus): Evidence for species delimitation from morphology and display behavior". Zootaxa. 4200 (1): 83. doi:10.11646/zootaxa.4200.1.3. PMID 27988640.
External links[]
- Booted Racket-tail videos. Internet Bird Collection.
- Booted Racket-tail Ecuadorean Postage Stamp. BirdLife International.
- Birds of Ecuador. University of Texas Astronomy.
- Booted Racket-tail photo gallery. VIREO.
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- IUCN Red List least concern species
- Ocreatus
- Birds of the Northern Andes
- Birds described in 1832
- Hummingbird stubs