Amazilia alfaroana Underwood, 1896

Alfaro's hummingbird, Indigo-capped hummingbird, Miravalles hummingbird, Guanacaste hummingbird



Taxonomy & Nomenclature

Synonym/s: Saucerottia alfaroana Underwood, 1896; Amazilia cyanifrons alfaroana Underwood, 1896; Amazilia cyanifrons (Bourcier, 1843) [pro parte]


Conservation Status


Last record: 1895 (Underwood, 1896)

IUCN RedList status: Critically Endangered



Miravalles Volcano, Costa Rica


Biology & Ecology




Only known from the holotype.






Original scientific description:

Underwood, C. F. (1896) A List of Birds Collected or Observed on the Lower, Southern, And South-western Slopes of the Volcano of Miravalles and on the Lower Lands Extending to Bagaces in Costa Rica, With a Few Observations on Their Habits. Ibis 38: 431-451. [volume 2(7)?]


Other references:

BirdLife International. 2017. Amazilia alfaroana. The IUCN Red List of Threatened Species 2017: e.T119194112A119196362. Downloaded on 16 December 2017.

del Hoyo, J.; Collar, N. J. 2014. HBW and BirdLife International Illustrated Checklist of the Birds of the World. Volume 1: Non-passerines. Lynx Edicions and BirdLife International, Barcelona, Spain and Cambridge, UK.

Kirwan, Guy M. and Collar, Nigel J. (2016). The ‘foremost ornithological mystery of Costa Rica’: Amazilia alfaroana Underwood, 1896. Zootaxa 4189(2): 244-250. [Abstract]

Mittermeier, John C. et al. (2022). Fantastic lost birds and how you can help find them: an updated gap analysis for the Neotropical avifauna. Neotropical Birding 31: 25-32.

Stiles, F. G. and Skutch, A. F. (1989). A Guide to the Birds of Costa Rica. Cornell University Press, Ithaca, NY.

Weller, A. A. (2001). On types of trochilids in the Natural History Museum, Tring III. Amazilia alfaroana Underwood (1896), with notes on biogeography and geographical variation in the Saucerottia saucerrottei superspecies. Bulletin B.O.C. 121(2): 98-107.


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