Animalia > Chordata > Aves > Charadriiformes > Scolopacidae > Aphriza > Aphriza virgata

Aphriza virgata (Surfbird)

Synonyms: Calidris virgata (homotypic); Tringa virgata (homotypic)
Language: Spanish

Wikipedia Abstract

The surfbird (Aphriza virgata) is a small stocky wader in the family Scolopacidae. It is usually classified in a genus of its own. It was once considered to be allied to the turnstones, but more recent data suggests it is very close genetically to the red and great knots and should be included in Calidris. Indeed, the great knot looks very much like a larger, longer-billed, and somewhat darker surfbird. These birds migrate to the Pacific coasts of North and South America, from southern Alaska to Tierra del Fuego. The song is a whistled tee tee tee.
View Wikipedia Record: Aphriza virgata

EDGE Analysis

Uniqueness Scale: Similiar (0) 
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
 Unique & Vulnerable (100)
ED Score: 12.8082
EDGE Score: 2.62526


Adult Weight [1]  201 grams
Female Weight [3]  216 grams
Male Weight [3]  187 grams
Weight Dimorphism [3]  15.5 %
Diet [2]  Carnivore (Invertebrates)
Diet - Invertibrates [2]  100 %
Forages - Ground [2]  100 %
Clutch Size [5]  4
Incubation [4]  23 days
Mating Display [6]  Non-acrobatic aerial display
Migration [7]  Intercontinental
Wing Span [4]  22 inches (.55 m)


Protected Areas

Important Bird Areas

Biodiversity Hotspots

Name Location Endemic Species Website
California Floristic Province Mexico, United States No
Chilean Winter Rainfall-Valdivian Forests Chile No
Mesoamerica Belize, Costa Rica, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, Panama No
Tumbes-Choco-Magdalena Colombia, Ecuador, Panama, Peru No

Prey / Diet

Clupea pallasii pallasii (Pacific herring)[4]
Emerita analoga (Pacific sand crab)[4]
Excirolana linguifrons[4]

Prey / Diet Overlap


Vulpes vulpes (Red Fox)[4]


Parasitized by 
Aploparaksis diagonalis[8]

Range Map

External References

NatureServe Explorer


Attributes / relations provided by
1Nathan P. Myhrvold, Elita Baldridge, Benjamin Chan, Dhileep Sivam, Daniel L. Freeman, and S. K. Morgan Ernest. 2015. An amniote life-history database to perform comparative analyses with birds, mammals, and reptiles. Ecology 96:3109
2Hamish Wilman, Jonathan Belmaker, Jennifer Simpson, Carolina de la Rosa, Marcelo M. Rivadeneira, and Walter Jetz. 2014. EltonTraits 1.0: Species-level foraging attributes of the world's birds and mammals. Ecology 95:2027
3Senner, S. E., and B. J. McCaffery. 1997. Surfbird (Aphriza virgata). In The Birds of North America, No. 266 (A. Poole and F. Gill, eds.). The Academy of Natural Sciences, Philadelphia, PA, and The American Ornithologists' Union, Washington, DC
4del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
5Jetz W, Sekercioglu CH, Böhning-Gaese K (2008) The Worldwide Variation in Avian Clutch Size across Species and Space PLoS Biol 6(12): e303. doi:10.1371/journal.pbio.0060303
6Terje Lislevand, Jordi Figuerola, and Tamás Székely. 2007. Avian body sizes in relation to fecundity, mating system, display behavior, and resource sharing. Ecology 88:1605
7Myers, P., R. Espinosa, C. S. Parr, T. Jones, G. S. Hammond, and T. A. Dewey. 2006. The Animal Diversity Web (online). Accessed February 01, 2010 at
8Gibson, D. I., Bray, R. A., & Harris, E. A. (Compilers) (2005). Host-Parasite Database of the Natural History Museum, London
Ecoregions provided by World Wide Fund For Nature (WWF). WildFinder: Online database of species distributions, ver. 01.06 Wildfinder Database
Biodiversity Hotspots provided by Critical Ecosystem Partnership Fund
Abstract provided by DBpedia licensed under a Creative Commons License
Species taxanomy provided by GBIF Secretariat (2022). GBIF Backbone Taxonomy. Checklist dataset accessed via on 2023-06-13; License: CC BY 4.0