Cul De Canard (CDC) feathers are prized for their natural buoyancy and lifelike movement, making them a cornerstone material for dry fly patterns. The fibers trap air and help flies float naturally on the surface without excessive floatant. Their soft, mobile structure creates subtle motion that imitates emerging insects perfectly. CDC is easy to work with and can be used for wings, collars, or entire bodies. This material is essential for anglers focused on delicate presentations and technical dry fly fishing.