Animalia > Chordata > Aves > Anseriformes > Anatidae > Anas > Anas rubripes

Anas rubripes (American Black Duck)

Synonyms: Anas obscura; Anas obscura rubripes (homotypic)
Language: French

Wikipedia Abstract

The American black duck (Anas rubripes) is a large dabbling duck. The scientific name is derived from Latin. Anas means "duck", and rubripes comes from ruber "red" and pes, "foot". American black ducks are similar to mallards in size, and resemble the female mallard in coloration, although the black duck's plumage is darker. It is native to eastern North America and has shown reduction in numbers and increasing hybridization with the more common mallard as that species has spread with man-made habitat changes.
View Wikipedia Record: Anas rubripes

EDGE Analysis

Uniqueness Scale: Similiar (0) 
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
 Unique & Vulnerable (100)
ED Score: 1.22601
EDGE Score: 0.800209


Clutch Size [7]  9
Clutches / Year [4]  1
Fledging [2]  56 days
Incubation [4]  28 days
Mating Display [8]  Ground display (mostly)
Mating System [8]  Monogamy
Maximum Longevity [4]  26 years
Snout to Vent Length [2]  22 inches (57 cm)
Water Biome [1]  Lakes and Ponds, Rivers and Streams, Coastal
Wing Span [9]  35 inches (.9 m)
Adult Weight [2]  2.593 lbs (1.176 kg)
Birth Weight [4]  32 grams
Female Weight [6]  2.425 lbs (1.10 kg)
Male Weight [6]  3.086 lbs (1.40 kg)
Weight Dimorphism [6]  27.3 %
Breeding Habitat [3]  Boreal forests, Coastal saltmarshes
Wintering Geography [3]  Eastern U.S./Canada
Wintering Habitat [3]  Freshwater lakes and rivers, Coastal saltmarshes
Diet [5]  Carnivore (Invertebrates), Granivore, Herbivore
Diet - Invertibrates [5]  40 %
Diet - Plants [5]  30 %
Diet - Seeds [5]  30 %
Forages - Water Surface [5]  80 %
Forages - Underwater [5]  20 %
Female Maturity [4]  1 year
Male Maturity [4]  1 year


Protected Areas

+ Click for partial list (100)Full list (113)

Important Bird Areas

Habitat Vegetation Classification

Prey / Diet

Alitta succinea (pile worm)[10]
Musa paradisiaca (Banana)[10]
Mya arenaria (Clam)[10]
Mytilus edulis (Blue mussel)[10]
Pinnixa sayana[10]


Bubo virginianus (Great Horned Owl)[10]
Haliaeetus leucocephalus (Bald Eagle)[10]


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
2Nathan 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
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
6Palmer, RS 1962–1988 Handbook of North American Birds. Yale University Press, New Haven CT. Volumes 1–5
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
8Terje Lislevand, Jordi Figuerola, and Tamás Székely. 2007. Avian body sizes in relation to fecundity, mating system, display behavior, and resource sharing. Ecology 88:1605
9del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
10Jorrit 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.
11Gibson, 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
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