Buff-fronted owl
Buff-fronted owl | |
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Buff-fronted Owl at São Paulo State, Brazil
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Chordata |
Class: | Aves |
Order: | Strigiformes |
Family: | Strigidae |
Genus: | Aegolius |
Species: | A. harrisii
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Binomial name | |
Aegolius harrisii (Cassin, 1849)
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The buff-fronted owl (Aegolius harrisii) is a small
Taxonomy and systematics
The buff-fronted owl was
The buff-fronted owl is the only member of genus Aegolius in South America. Its closest relative is the northern saw-whet owl (A. acadicus) of Canada and the U.S., and the other two extant members of the genus are found there and in Mexico. It has three subspecies, the nominate A. h. harrisii, A. h. dabbenei, and A. h. iheringi. The last of these has been suggested to be a separate species.[4][3][8]
Description
The buff-fronted owl is 19 to 21 cm (7.5 to 8.3 in) long and weighs 104 to 155 g (3.7 to 5.5 oz). It is compact and has a short tail and a large blocky head without ear tufts. Its
Distribution and habitat
The nominate subspecies of the buff-fronted owl is found discontinuously in the Andes from Venezuela south to southern Peru. A. h. iheringi is also found discontinuously, in Bolivia, Paraguay, eastern Brazil, and in southern Brazil, northeastern Argentina, and northeastern Paraguay. A. h. dabbenei is found in northwestern Argentina, and birds observed in western Bolivia might also be this subspecies. The subspecies of birds found locally on the tepuis of southern Venezuela and Guyana is not known.[3][8]
The buff-fronted owl inhabits a variety of landscapes including open humid forest, dry forest, forest edges, subtropical rainforest, and human-altered areas with fruit trees and palms. In the Andes it ranges between 1,500 and 3,800 m (4,900 and 12,500 ft) and elsewhere between about 600 and 1,000 m (2,000 and 3,300 ft).[8]
Behavior
Feeding
The buff-fronted owl's hunting behavior and diet have not been studied. It has been recorded taking insects, rodents, birds, and other small vertebrates.[8]
Breeding
Almost nothing is known about the buff-fronted owl's breeding phenology. A nest with three eggs was found in Brazil in March; it was in a dead palm, in what appeared to be an abandoned parrot nest cavity. Another nest was in a hollow tree.[8]
Vocalization
The male buff-fronted owl's song is "a rapid, wavering trill, 'frurururururururu'". Dependent fledglings give a "hissing, raspy 'cheet' begging call".[8]
Status
The
References
- ^ a b BirdLife International (2016). "Buff-fronted Owl Aegolius harrisii". IUCN Red List of Threatened Species. 2016. Retrieved 8 September 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. A classification of the bird species of South America. American Ornithological Society. https://www.museum.lsu.edu/~Remsen/SACCBaseline.htm retrieved August 24, 2021
- ^ Cassin, John (1849). "Description of new species of the genera Nyctale, Brehm., and Sycobius, Vieill.; specimens of which are in the collection of the Academy of Natural Sciences of Philadelphia". Proceedings of the Academy of Natural Sciences of Philadelphia. 4: 157–158 [157]. The title page is dated 1848 but the volume was not published until the following year.
- ^ Peters, James Lee, ed. (1940). Check-list of Birds of the World. Vol. 4. Cambridge, Massachusetts: Harvard University Press. p. 174.
- ISBN 978-1-4081-2501-4.
- ^ a b c d e f g h Holt, D. W., R. Berkley, C. Deppe, P. L. Enríquez, J. L. Petersen, J. L. Rangel Salazar, K. P. Segars, K. L. Wood, A. Bonan, and J. S. Marks (2020). Buff-fronted Owl (Aegolius harrisii), 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.bufowl1.01 retrieved September 8, 2021
Further reading
- Hilty Birds of Venezuela ISBN 0-7136-6418-5
- Hilty and Brown Birds of Colombia ISBN 0-691-08371-1