Aythya collaris

• Overview
• Interesting Facts
• Common Names
• Description
• Biology
• Taxonomy
• Similar Species
• More Info
• Further Reading
• Notes

Overview

Interesting Facts

Common Names

Click on the language to view common names.

Description

Physical Description

Habitat

During the non-breeding season , this duck's habitat includes the same water types as during the breeding season .

Vegetation: freshwater lakes and ponds • Maximum Elevation: 2,000 meters • Sensitivity to Disturbance: Medium

Typically found at an altitude of 0 to 2,911 meters (0 to 9,551 feet).[1]

Ecology: List of Habitats :

•     5     Wetlands (inland)   
  
•     5.4     Wetlands (inland) - Bogs , Marshes, Swamps , Fens , Peatlands   
  
•     5.5     Wetlands (inland) - Permanent Freshwater Lakes (over 8ha)   
[more info]

Biology

Diet

The diet of the Ring-necked Duck is variable, depending on its location, but includes invertebrates and some plant material . This species takes food by diving from the surface of the water.

Reproduction

The breeding season begins in late May. Breeding habitat includes mostly freshwater lakes , ponds , marshes, and swamps . Nesting is normally associated with water. The nest is built of grass and other plant material . It is either on the ground or floating in vegetation. It is lined with down . The female lays 6-14 (usually 8-10) eggs that she incubates for 26-27 days. The male may stay around the area while the female incubates, but otherwise is not involved further in the nesting. The young are precocial and are cared for by the female for 49-56 days after hatching .

• Breeding Habitat: Wetland-open water
• Clutch Size: 6-14
• Length of Incubation : 26-27 (25-29) days
• Days to Fledge : 49-56
• Number of Broods: 1

Migration

Migratory

Taxonomy

Synonyms

Aythya collaris (Donovan, 1809)

Notes

Name Status: Accepted Name .

Last scrutiny: 23-Jan-2007

Similar Species

Greater Scaup, Lesser Scaup, Tufted Duck

Members of the genus Aythya

ZipcodeZoo has pages for 18 species and subspecies in this genus:

A. affinis (Lesser Black-Head Duck) · A. americana (Red-Headed Raft Duck) · A. australis (Hardhead Duck) · A. australis australis (Australian White-Eyed Duck) · A. baeri (Baer's White-Eye) · A. collaris (Ring-Billed Blackhead) · A. ferina (Northern Pochard) · A. ferina ferina (European Pochard) · A. fuligula (Tufted Duck) · A. innotata (Madagascar Pochard) · A. marila (Greater Black-Head Duck) · A. marila marila (Greater Scaup) · A. marila mariloides (Greater Scaup) · A. marila nearctica (Greater Scaup) · A. novaeseelandiae (New Zealand Scaup) · A. nyroca (Ferruginous Duck / White-Eyed Pochard) · A. nyroca nyroca (Ferruginous Duck / White-Eyed Pochard) · A. valisineria (Red-Headed Bullneck)

More Info

• Search for Pictures: images.google.com
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• Search using Scientific Name and Vernacular Names: All the Web | AltaVista Canada | AltaVista | Excite | Google | HotBot | Lycos
• Search using Specialized Databases: GenBank | Medline | Scirus | CISTI/CAL | Agricola Periodicals | Agricola Books

Further Reading

• A Directory of Neotropical Wetlands. IUCN Conservation Monitoring Centre url p. 376, p. 438, p. 455, p. 456, p. 457, p. 460, p. 510, p. 565, p. 594, p. 676.
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• A catalogue of Canadian birds, By Montague Chamberlain. Saint John, N.B., J. & A. McMillan, 1887. url p. 23.
• A catalogue of Canadian birds: with notes on the distribution of the species / Saint John, N.B.: J. & A. McMillan, 1887. url .
• A catalogue of the birds of Indiana / by Amos W. Butler. S.l.: s.n., 1891? url p. 23, p. 23.
• A catalogue of the birds of the Virginias / by Wm. C. Rives. Newport, R.I.: Printed for the Society by T.T. Pitman, 1890. url p. 47.
• A checklist of the vertebrate animals of Kansas / George D. Potts, Joseph T. Collins. [Lawrence, Kan.]: Museum of Natural History, University of Kansas, 1991. url p. 7.
• A list of the birds of Florida / by Charles B. Cory. Boston: For sale by B. Whidden, 1896. url p. 5.
• A list of the birds of Maine, showing their distribution by counties and their status in each county. Prepared under the auspices of the United ornithologists of Maine by Ora W. Knight. .. Augusta, Kennebec journal print, 1897. url p. 32.
• A list of the birds of Maryland / F.C. Kirkwood. Baltimore, Md., 1895. url p. 266.
• A list of the birds of Maryland, giving dates of the arrival, departure and nesting periods of our regular birds; also including stragglers and such others as no doubt occur but are not recorded. By F.C. Kirkwood. .. Baltimore[Deutsch Lithographing & Printing Co.]1895. url p. 266, p. 266.
• A list of the birds of Maryland: giving dates of the arrival, departure and nesting periods of our regular birds, also including stragglers and such others as no doubt occur but are not recorded / Baltimore: Deutsch Lithographing & Print. Co.; 1895. url .
• A list of the birds of New Hampshire. By Glover M. Allen Manchester, N.H., Nature press, 1903. url p. 192, p. 206, p. 74.
• A list of the birds of eastern North America / by Charles B. Cory. Boston: For sale by B. Whidden, 1896. url p. 10.
• A manual of North American birds. By Robert Ridgway. Illustrated by 464 outline drawings of the generic characters. Philadelphia, J. B. Lippincott Company, 1887. url p. 103.
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• A preliminary catalog of the birds of Missouri / St. Louis: Academy of Science of St. Louis, 1907. url .
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• The birds of Rhode Island / by Reginald Heber Howe, and Edward Sturtevant. [S.l.: s.n.], 1899. url p. 38.
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Notes

Contributors

• BirdLife International 2009. Aythya collaris. In: IUCN 2011. IUCN Red List of Threatened Species. Version 2011.2. <www.iucnredlist.org>. Downloadedon 30January2012.
• Brands, S.J. (comp.) 1989-present. The Taxonomicon. Universal Taxonomic Services, Zwaag, The Netherlands. Accessed January 9, 2012.
• IUCN 2012. IUCN Red List of Threatened Species. Version 2011.2. . Downloaded on January 28, 2012.

Data Sources

Accessed through GBIF Data Portal November 29, 2007:

• Avian Knowledge Network, eBird
• Bernice Pauahi Bishop Museum, Bishop Museum Natural History Specimen Data
• Biologiezentrum der Oberoesterreichischen Landesmuseen, Biologiezentrum Linz
• Canadian Biodiversity Information Facility, North West Territories and Nunavut Bird Checklist, Canada
• Canadian Biodiversity Information Facility, Ontario Nest Records
• Canadian Biodiversity Information Facility, Provincial Museum of Alberta, Edmonton, AB, Canada. Birds
• Canadian Biodiversity Information Facility, Royal British Columbia Museum
• Marine Science Institute, UCSB, Paleobiology Database
• Museum of Vertebrate Zoology, Terrestrial vertebrate specimens
• New Brunswick Museum, NBM birds
• Royal Ontario Museum, Bird specimens
• Santa Barbara Museum of Natural History, Santa Barbara Musem of Natural History
• UNIBIO, IBUNAM, CNAV/Coleccion Nacional de Aves
• University of Michigan Museum of Zoology
• , Bird specimens

Identifiers

• Biodiversity Heritage Library NamebankID: 11739
• Catalogue of Life Accepted Name Code: ITS-175128
• Global Biodiversity Information Facility Taxonkey: 4490920
• Integrated Taxonomic Information System (ITIS) Taxonomic Serial Number (TSN): 175128
• IUCN ID: 193773
• Natural Heritage Network Species Identifier: ABNJB11040
• Zipcode Zoo Species Identifier: 896

Footnotes

1. Mean = 28.660 meters (94.029 feet), Standard Deviation = 44.270 based on 110,117 observations. Altitude information for each observation from British Oceanographic Data Centre. [back]

©2004-2012 David Stang. All rights reserved.