Animalia > Chordata > Aves > Anseriformes > Anatidae > Oxyura > Oxyura jamaicensis

Oxyura jamaicensis (Ruddy Duck)

Synonyms: Anas jamaicensis (homotypic); Erismatura jamaicensis
Language: French; Spanish

Wikipedia Abstract

The ruddy duck (Oxyura jamaicensis) is a duck from North America and the Andes Mountains of South America, one of the stiff-tailed ducks. The genus name is derived from Ancient Greek oxus, "sharp", and oura, "tail", and jamaicensis is Jamaica.
View Wikipedia Record: Oxyura jamaicensis


Invasive Species

View ISSG Record: Oxyura jamaicensis

EDGE Analysis

Uniqueness Scale: Similiar (0) 
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
 Unique & Vulnerable (100)
ED Score: 5.68041
EDGE Score: 1.89918


Clutch Size [7]  8
Clutches / Year [4]  1
Fledging [6]  56 days
Global Population (2017 est.) [3]  1,200,000
Incubation [4]  23 days
Maximum Longevity [4]  14 years
Snout to Vent Length [6]  15 inches (38 cm)
Water Biome [1]  Lakes and Ponds, Coastal, Brackish Water
Wing Span [8]  22 inches (.57 m)
Adult Weight [2]  1.235 lbs (560 g)
Birth Weight [4]  43 grams
Female Weight [2]  1.124 lbs (510 g)
Male Weight [2]  1.345 lbs (610 g)
Weight Dimorphism [2]  19.6 %
Breeding Habitat [3]  Prairie wetlands, Freshwater marshes
Wintering Geography [3]  Widespread
Wintering Habitat [3]  Freshwater lakes and rivers, Coastal marine
Diet [5]  Carnivore (Invertebrates), Granivore
Diet - Invertibrates [5]  60 %
Diet - Seeds [5]  40 %
Forages - Underwater [5]  100 %
Female Maturity [4]  1 year
Male Maturity [4]  1 year


Protected Areas

+ Click for partial list (100)Full list (184)


Important Bird Areas

Name Location  IBA Criteria   Website   Climate   Land Use 
Cabral Lagoon Dominican Republic A1, A2, A4i, A4iii
Lago Cumbal Colombia A1
Laguna de Tota Colombia A1, A2
Salton Sea USA A4i

Biodiversity Hotspots

Habitat Vegetation Classification

Name Location  Website 
Midwest Mixed Emergent Deep Marsh United States (Indiana, Wisconsin, Minnesota, Nebraska, Alabama, Missouri, Ohio, Tennessee, North Dakota, Iowa, Michigan, South Dakota, Kentucky, Illinois); Canada (Ontario)

Prey / Diet

Sphaerium striatinum (striated fingernailclam)[9]


Haliaeetus leucocephalus (Bald Eagle)[9]


Parasite of 
Aythya americana (Redhead)[9]


Range Map

External References

NatureServe Explorer


Attributes / relations provided by
1Myers, 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
2Storchová, Lenka; Hořák, David (2018), Data from: Life-history characteristics of European birds, Dryad, Dataset,
3Partners in Flight Avian Conservation Assessment Database, version 2017. Accessed on January 2018.
4de Magalhaes, J. P., and Costa, J. (2009) A database of vertebrate longevity records and their relation to other life-history traits. Journal of Evolutionary Biology 22(8):1770-1774
5Hamish 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
6Nathan 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
7Jetz 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
8del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
9Jorrit H. Poelen, James D. Simons and Chris J. Mungall. (2014). Global Biotic Interactions: An open infrastructure to share and analyze species-interaction datasets. Ecological Informatics.
10Gibson, D. I., Bray, R. A., & Harris, E. A. (Compilers) (2005). Host-Parasite Database of the Natural History Museum, London
11International Flea Database
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 (2019). GBIF Backbone Taxonomy. Checklist dataset accessed via on 2020-03-21; License: CC BY 4.0