Animalia > Chordata > Aves > Anseriformes > Anatidae > Anas > Anas undulata
 

Anas undulata (Yellow-billed Duck)

Wikipedia Abstract

The yellow-billed duck (Anas undulata) is a 51–58 cm long dabbling duck which is an abundant resident breeder in southern and eastern Africa. This duck is not migratory, but will wander in the dry season to find suitable waters. It is highly gregarious outside the breeding season and forms large flocks. These are mallard-sized mainly grey ducks with a darker head and bright yellow bill. The wings are whitish below, and from above show a white-bordered green speculum. The male has a teal-like whistle, whereas the female has a mallard-like quack.
View Wikipedia Record: Anas undulata

Infraspecies

Anas undulata ruppelli
Anas undulata undulata (South African yellow-billed duck)

EDGE Analysis

Uniqueness Scale: Similiar (0) 
0
 Unique (100)
Uniqueness & Vulnerability Scale: Similiar & Secure (0) 
2
 Unique & Vulnerable (100)
ED Score: 1.51752
EDGE Score: 0.923276

Attributes

Adult Weight [1]  1.953 lbs (886 g)
Birth Weight [2]  55 grams
Diet [3]  Carnivore (Invertebrates), Granivore, Herbivore
Diet - Invertibrates [3]  30 %
Diet - Plants [3]  50 %
Diet - Seeds [3]  20 %
Forages - Ground [3]  50 %
Forages - Water Surface [3]  50 %
Clutch Size [5]  7
Incubation [4]  28 days
Maximum Longevity [4]  29 years

Ecoregions

Protected Areas

Important Bird Areas

Name Location  IBA Criteria   Website   Climate   Land Use 
Barberspan and Leeupan South Africa A1, A4i, A4ii, A4iii
De Hoop Nature Reserve South Africa A1, A2, A3, A4i, A4iii
Grassland Biosphere Reserve (proposed) South Africa A1, A2, A3, A4i, A4ii, A4iii
Lake St Lucia and Mkuze swamps South Africa A1, A2, A3, A4i, A4iii

Biodiversity Hotspots

Consumers

Institutions (Zoos, etc.)

Range Map

Distribution

External References

Photos

Citations

Attributes / relations provided by
1A comparative study of egg mass and clutch size in the Anseriformes, Jordi Figuerola and Andy J. Green, J Ornithol (2006) 147: 57–68
2Terje Lislevand, Jordi Figuerola, and Tamás Székely. 2007. Avian body sizes in relation to fecundity, mating system, display behavior, and resource sharing. Ecology 88:1605
3Hamish 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
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
6Gibson, 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