It's only if you hunt in SW WA in units 2A or 2B. It's because of the ill-fated Dusky.
I think SW and NW Oregon are the only ones required to take a test like this in the nation. It was due to natural causes and they have found that their are 7 sub species of them, so they are try to keep the duskies around despite all odds. The are trying to get around natural selection. When I was a kid we didn't see to many geese in the area, now they are like flies.