Cul de canard Cul de canard Cul de canard (CDC) (French for "duck bottom") are the feathers from the back of a duck directly around the preen gland (uropygial gland); they are very buoyant due to preen oil produced by the preen gland. They are used when tying dry flies for fly fishing. They owe their buoyancy to their proximity to the ducks preen gland which 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
Le Canard enchaîné considered one of (if not the) most objective French publications—hence its continued existence. It has a limited web presence, dependent, as it is, on selling a printed product. Despite declining newspaper circulations in France, and elsewhere, "Canard" is rich and growing. It owns cash reserves and property holdings worth 110 million euros. It runs cheaply and profitably, restricting itself to eight pages of two-color newsprint each week. Circulation has risen by a third since 2007 and its scandal-fuelled growth has seen a rise to 700,000 copies being printed and sold each week. Its net profit in 2009 was 5 million