Animalia > Chordata > Aves > Anseriformes > Anatidae > Aythya > Aythya americana
 

Aythya americana (Redhead)

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Wikipedia Abstract

The redhead (Aythya americana) is a medium-sized diving duck. The scientific name is derived from Greek aithuia an unidentified seabird mentioned by authors including Hesychius and Aristotle, and Latin americana, of America. The redhead is 37 cm (15 in) long with an 84 cm (33 in) wingspan. It belongs to the genus Aythya, together with 11 other described species. The redhead and the common pochard form a sister group which together is sister to the canvasback.
View Wikipedia Record: Aythya americana

EDGE Analysis

Uniqueness Scale: Similiar (0) 
0
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
4
 Unique & Vulnerable (100)
ED Score: 1.87409
EDGE Score: 1.05573

Attributes

Clutch Size [6]  9
Clutches / Year [4]  1
Fledging [2]  65 days
Global Population (2017 est.) [3]  900,000
Incubation [4]  26 days
Maximum Longevity [4]  23 years
Snout to Vent Length [2]  19 inches (48 cm)
Water Biome [1]  Lakes and Ponds
Wing Span [7]  31 inches (.79 m)
Adult Weight [2]  2.348 lbs (1.065 kg)
Birth Weight [4]  38 grams
Female Weight [2]  2.233 lbs (1.013 kg)
Male Weight [2]  2.465 lbs (1.118 kg)
Weight Dimorphism [2]  10.4 %
Breeding Habitat [3]  Prairie wetlands, Freshwater marshes
Wintering Geography [3]  Widespread U.S./Mexico
Wintering Habitat [3]  Coastal marine, Freshwater lakes and rivers
Diet [5]  Carnivore (Invertebrates), Granivore, Herbivore
Diet - Invertibrates [5]  10 %
Diet - Plants [5]  70 %
Diet - Seeds [5]  20 %
Forages - Water Surface [5]  50 %
Forages - Underwater [5]  50 %
Female Maturity [4]  1 year
Male Maturity [4]  1 year

Ecoregions

Protected Areas

+ Click for partial list (100)Full list (135)

Important Bird Areas

Name Location  IBA Criteria   Website   Climate   Land Use 
Cumberland Marshes Canada A4i, A4iii

Biodiversity Hotspots

Name Location Endemic Species Website
California Floristic Province Mexico, United States No
Madrean Pine-Oak Woodlands Mexico, United States No
Mesoamerica Belize, Costa Rica, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, Panama No

Prey / Diet

Prey / Diet Overlap

Competing SpeciesCommon Prey Count
Caretta caretta (Loggerhead)2
Chelonia mydas (Green Turtle)1
Lepidochelys kempii (Atlantic Ridley, Kemp’s Ridley Seaturtle)1
Stenotomus chrysops (Scup)1

Predators

Haliaeetus leucocephalus (Bald Eagle)[9]
Homo sapiens (man)[9]
Larus californicus (California Gull)[9]
Poliocitellus franklinii (Franklin's ground squirrel)[10]
Procyon lotor (Raccoon)[9]

Consumers

Institutions (Zoos, etc.)

Range Map

Distribution

North America; Oceania; Western Michigan University’s Asylum Lake;

External References

Photos

Citations

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 animaldiversity.org
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
6Jetz 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
7del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona.
8FOOD HABITS OF REDHEADS (AYTHYA AMERICANA) WINTERING IN SEAGRASS BEDS OF COASTAL LOUISIANA AND TEXAS, USA, MICHOT, T. C., WOODIN, M. C. and NAULT, A. J., Acta Zoologica Academiae Scientiarum Hungaricae 54 (Suppl. 1), pp. 239–250, 2008
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.
10Spermophilus franklinii, Andrea C. Ostroff and Elmer J. Finck, MAMMALIAN SPECIES No. 724, pp. 1–5 (2003)
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 WWF WildFINDER
Biodiversity Hotspots provided by Critical Ecosystem Partnership Fund
Abstract provided by DBpedia licensed under a Creative Commons License