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
Creature animation Creature animation Creature animation is a specialised part of the animation process which involves bringing realistic animals and creatures to life. It is often distinguished from character animation, which involves breathing life into animated characters and creating the illusion of thought, feeling and emotion. Creature animators create highly realistic motion in animals or creatures; examples include the dinosaurs animated in the 1993 Steven Spielberg film "Jurassic Park". Since dinosaurs cannot be filmed or observed in motion, the animators studied other living creatures such as birds and lizards in order to re-create how a dinosaur might move and behave. Fours year