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
Antisemitic canard with his full rehabilitation. During World War I, the German Military High Command administered "Judenzählung" (German for "Jewish Census"). It was designed to confirm allegations of the lack of patriotism among German Jews, but the results of the census disproved the accusations and were not made public. Another variation of this notion is an accusation that Jews are cowards who evade military service. With the rise of racist theories in the 19th century, "[a]nother old anti-Semitic canard served to underline the putative 'femininity' of the Jewish race. Like women, Jews lacked an 'essence'". In "Genocide and Gross Human Rights Violations",