Night vision and thermal are not legal in Colorado. The only exception is if you are an agent of the landowner for the purpose of killing depredating predators. But, you can hunt at night year round. The comment about a permit is true for public land, you have to tell them where you want to hunt. The permit has a time frame on it as well, but I do not remember the duration.Unless the laws have changed within the last couple years, in CO, you can night hunt year round for coyote. All other fur bearers have a season. Coyote run year 'round. Have to have a permit issued from CPW to spotlight public ground. Private you must have written consent form the landowner and to use NV/Thermal, you have to be on private ground, acting as "an agent of the landowner". NV/Therm can't be used at any other time. At least this was the way I understood or interpreted the laws. Again, they may now be different.