We propose to revise the regulations regarding captive-bred migratory waterfowl and other game birds (those species for which hunting regulations are established in 50 CFR 20.11).  We take this action to address public concerns resulting from a final rule we published on March 1, 2010 (75 FR 9316), which revised the regulations for the muscovy duck (Cairina moschata), and to consolidate and simplify permitting for captive-bred game birds. We also propose to combine Special Purpose Game Bird permits with Waterfowl Sale and Disposal permits, and to establish a permit exemption for domesticated varieties of ducks that are readily distinguishable in appearance from wild members of their species and to prohibit their release to the wild.