TO HUNT WATERFOWL, you need a small-game hunting license. If you are 16 or older, you also must have the $33 Federal Migratory Bird Hunting and Conservation Stamp (Duck Stamp) AND the $12.47 Colorado State Waterfowl Stamp to hunt waterfowl.
COLORADO WATERFOWL STAMP: The state stamp is printed on your hunting license and validated by signing your name in ink on the license.
FEDERAL DUCK STAMP: Effective July 1, 2024, the U.S. Fish and Wildlife Service implemented the Duck Stamp Modernization Act of 2023, allowing an individual to carry an electronic stamp for the entire waterfowl hunting season. The new electronic stamp shall remain valid from the day it is sold through the following June 30, instead of being valid 45 days from the day of sale (fws.gov/service/buy-duck-stamp-or-e-stamp). Traditional methods of purchasing the Federal Duck Stamp will continue. The physical stamp is valid when you sign your name in ink across the face of the stamp.
A federal stamp is not required to take light geese during the conservation order season: See "Legal Migratory Bird Hunting Methods," in the Small Game and Waterfowl brochure.