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Description: Ruddy Ducks are small, ... Life Cycle: The breeding season is from April to June. Males perform courtship displays, puffing up the neck and then beating the bill against the chest to make a drumming sound. When a pair forms, both partners help to build a nest among the reeds, bending the reeds to form the...
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www.garden-city.org/zoo/animalinfo/Birds/ruddy_duck.htm
www.garden-city.org/zoo/animalinfo/Birds/ruddy_duck.htm
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Life cycle; The biology and ecology of the ruddy duck have been well studied in both North America and Britain. In winter, ruddy ducks are highly gregarious, forming large flocks on a variety of waterbodies, often concentrated in a few key sites (Portmore Lough in the case of Northern Ireland).
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www.habitas.org.uk/invasive/species.asp?item=208
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Higher taxa: Life Vertebrata Aves Anatidae Oxyura ... Oxyura jamaicensis (ruddy duck) is a small diving duck with a long tail, often held erect. On an average the females weigh 550g and males around 600g. During the breeding season males can be distinguished from other ducks by a white cheek patch,
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www.discoverlife.org/mp/20q?search=Oxyura+jamaicensis
www.discoverlife.org/mp/20q?search=Oxyura+jamaicensis
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Ruddy Duck nests were located at Farmington Bay W.M\1.A. ..... Life histories of North American wildfowl. U.S. Natl. Mus.,. Btull. 130. COLE, L. J. 1917. ... The reproductive cycle, p. 35-79. In The Waterfowl of the World, vol. ...
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www.jstor.org/stable/4512288
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plumage cycle in Anatidae; all but one of the exceptions (ruddy duck, Oxyura .... Life Ltd., London. JOYNER, D. E. 1978. Wing molt in female ruddy ducks. ...
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www.jstor.org/stable/30055110
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Oxyura jamaicensis (ruddy duck) is a small diving duck with a long tail, often held erect. On an average the females weigh 550g and males around 600g. During the breeding season males can be distinguished from other ducks by a white cheek patch, chestnut red body plumage, and blue bill.
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www.invasivespecies.net/database/species/ecology.asp?si...
www.invasivespecies.net/database/species/ecology.asp?si=152&fr=1&sts=
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Each species account has a section for Description, Identification, Ecology, Annual Cycle, Social and Sexual Behavior, Nesting and Parental; Behavior, and Reproductive Success and Status. The Ruddy Duck account covers thirty-four pages, while the others range from twelve to eighteen.
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digitalcommons.unl.edu/cgi/viewcontent.cgi?article=1372...
digitalcommons.unl.edu/cgi/viewcontent.cgi?article=1372&context=greatplainsresearch
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Life Cycle The male ruddy duck courts the female by fanning out his tail and beating his bill against his chest to making a drumming sound and creating bubbles in the water. The female lays 6-20 eggs a floating nest of dry stems lined with down, concealed among reeds or bulrushes in a marsh.
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www.nhptv.org/wild/ruddyduck.asp
www.nhptv.org/wild/ruddyduck.asp
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