There is a conservation order now that allows most of the restrictions on their hunting lifted. During the normal goose season the limit has been 50/day and you have to use the normal methods to hunt geese. They are overpopulated now.
From the CO small game brochure (https://cpw.state.co.us/Documents/Ru...aterfowl.pdf):
IN LIGHT GOOSE CONSERVATION ORDER SEASON:Recorded or electronically amplified calls are allowed. Shotguns that hold more than 3 rounds in the chamber and magazine may be used in this season only. Hunting is allowed one-half hour before sunrise to one-half hour after sunset. A federal migratory bird stamp is not required, but a Colorado waterfowl stamp is.