Pacific Fly Fishers Online Fly Shop & Catalog

CDC, or Cul De Canard, feathers are taken from the preen gland area of a duck and naturally repel water.  Despite their appearance they float like a cork and are naturally hydrophobic.  Used in tons of fly patterns, CDC also can be used on subsurface flies where the CDC feathers hold air bubbles for a cool effect on patterns like caddis pupa and mayfly emergers. 

The amount pictured comes in each package.