Cul de canard - Wikipedia

Cul de canard(CDC) (French for "duck bottom" ) are the feathers from the back of aduckdirectly around the preen gland (uropygial gland); they are very buoyant due to preen oil produced by the preen gland. They are used when tyingdry fliesfor fly fishing. They owe their buoyancy to their proximity to the duckspreen glandwhich secretes an oil distributed by the duck as a cleaning and waterproofing measure. It is unnecessary for the angler to add additional oil by way of floatant. Flies incorporating CDC are easy to dress requiring no floatant and popular withanglersandtroutalike.^[1]

History

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The use of CDC's in fly fishing originated from theJura Mountainsduring the 1920s where fly fishermen used this feather in dry flies to aid buoyancy in a particular pattern called Moustique. It took until the 1980s for popular use of this feather within a whole range of patterns.^[2]

References

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^Rene Harrop (2003).Trout Hunter: The Way of an Angler.Pruett Publishing.ISBN 087108922X.
^"Definition of Cul de Canard".Fish4Flies.Retrieved15 February2013.

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