predators could prevent placement of nests in secure locations (Filliater et al. 1994). On my study area, known Ruddy Duck nest predators included raccoon ...
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www.jstor.org/stable/1370078
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Because the Ruddy Ducks chose to nest in the vegetation above water, predation from terrestrial predators was reduced to a minimum. ...
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www.jstor.org/stable/4078635
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In the ecosystems in which they live, ruddy ducks act as predators on soft-bodied invertebrates such as chironomid midge larvae and crustaceans. They also eat aquatic vegetation. ... Ruddy duck populations are considered stable throughout their range, and are considered a species of "Least Concern" on the IUCN list.
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animaldiversity.ummz.umich.edu/site/accounts/informatio...
animaldiversity.ummz.umich.edu/site/accounts/information/Oxyura_jamaicensis.html
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Nesting success in Ruddy Ducks is unpredictable based on a range of nest-site characteristics, according to research into 233 Ruddy Duck nests during summers 1994 to 1996 in the aspen parkland physiographic zone of the prairie pothole region near Minnedosa, Manitoba, Canada.
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www.faqs.org/abstracts/Biological-sciences/Ruddy-Duck-n...
www.faqs.org/abstracts/Biological-sciences/Ruddy-Duck-nesting-success-do-nest-characteristics-deter-nest-predation.html
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Once in flight, the ruddy duck must beat its wings very fast. Some people say it looks like a large hummingbird. To escape predators, it dives rather than flies. Ruddy ducks are partially migratory. They mostly depart their breeding grounds to winter in the south or near the coast.
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rosamondgiffordzoo.org/assets/uploads/animals/pdf/North...
rosamondgiffordzoo.org/assets/uploads/animals/pdf/NorthAmericanRuddyDuck.pdf
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Meet the Animals, MetaDescrition ... Mink reportedly steal and eat ruddy duck eggs, and presumably other predators do as well, but the more common cause of egg loss is nest flooding or desertion. Adult ruddy ducks are hunted, but are not a favored game bird.
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www.marylandzoo.org/meet/meet-animals.aspx?AnimalID=86
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If the ruddy duck were school bus yellow its posture in water would remind you of a rubber bathtub toy. With its stiff fan shaped tail held high and proud, and with its neck back and thick beak the ruddy duck looks like no other.
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www.wildlifedepartment.com/species/ruddyyduck.htm
www.wildlifedepartment.com/species/ruddyyduck.htm
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Except when migrating, the ruddy duck seldom flies. When they do, they take off with difficulty, keep a low altitude and skate across the water to an awkward stop when landing. Drakes fight to defend territories, nipping and wrestling one another above and below the water.
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www.zoberan.com/fun/ruddy.html
www.zoberan.com/fun/ruddy.html
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Or the flightless birds and other species in Australia and New Zealand which lack any evolved protection against introduced predators like cats and foxes. But unlike these examples, the ruddy duck is not exterminating another species but creating a new hybrid in which the genes from both existing species survive.
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www.bbc.co.uk/dna/h2g2/A643060
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