Aythya marila   Linnaeus,  1758 (Bird)
Organism information awaits expert curation
Taxonomy
Kingdom:Animalia
Phylum:Chordata
Class: Aves
Order:Anseriformes
Family:Anatidae

Image copyrights: Birds and birding in India

Description
Size: 40-51 cm.

Voice: Silent.

Habits: Gregarious in winter habitats, feeds by diving, moves around freely in open water.

Male: Head, neck, breast, upper back, rump and upper tail-coverts black, the first two with green sheen. Back pale grey, tail blackish-brown, flanks and abdomen white, posterior abdomen mixed with brown, vent and under tail-coverts dark brown or black, iris golden-yellow, greyish-blue bill with black tip, legs and feet greyish-blue. Female: Resembles the female Tufted Pochard, dark brown with a broad white ring around base of bill, and speculum white. Male (in eclipse): Like adult female, but with no white band round bill, upperparts more vermiculated with white and white speculum more pronounced than in female.

Breeding season: It breeds in the high Arctic from late-May or early-June (depending on the timing of the Arctic thaw). Nest and site as in Tufted Duck. Eggs, 7 to 12, olive-drab.

Synonym (s)

Common Name (s)
• Scaup Duck (English)
• Greater Scaup (English)
Economic Importance and Threats
Threats:  Anthropogenic
(The species is threatened by hunting for sport in North America, and suffers from disturbance from hunting also susceptible to oil pollution. )
Threats:  Natural threats
(It is also susceptible to avian influenza, so may be threatened by future outbreaks of the virus)

Ecology
Habitat:  Coastal
Trophic Level:  Consumer
Prey:  Aquatic molluscs and invertebrates constitute major food, also plant seeds.
IUCN Status:  Least Concern

Biogeography


• Maharashtra INDIA
• PAKISTAN
• BANGLADESH
• Maharashtra, Panvel INDIA
• Gujarat, Bhavnagar INDIA

Literature Source(s)
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at - http://www.marinespecies.org
  • (2003) IUCN Red list of threatened species Available at - http://www.iucnredlist.org/
  • Kumar, A; Sati, JP; Tak, PC and Alfred, JRB (2005) Handbook on Indian wetland birds and their conservation Zoological Survey of India, Dehra Dun 468 pp Available at - NIO, Goa
  • Birding in India and South Asia Available at - http://www.birding.in/
  • Vernacular names of the Birds of the Indian Subcontinent Buceros, Envis newsletter: Avian Ecology & Inland Wetlands 62pp Available at - http://www.bnhsenvis.nic.in/pdf/BUCEROS%203%20(1).pdf
  • Manakadan R and Pittie A (2001) Standardized English names of the Birds of the Indian Subcontinent BUCEROS Envis Newsletter: Avian ecology and inland wetland 6(1) 26pp Available at - http://www.bnhsenvis.nic.in/pdf/BUCEROS%206%20(1).pdf
  • Kumar A, sati JP and Tak CK (2003) Checklist of Indian Waterbids Buceros Envis Newsletter: Avian ecology and inland wetlands 8(1) 30pp Available at - http://www.bnhsenvis.nic.in/pdf/BUCEROS%208%20(1).pdf
  • Ali S and Ripley SD (1968) Handbook of the birds of India and Pakistan Oxford university press 1 1-368pp Available at - NIO

Page last updated on:2012-08-21

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