Look into fishing the ponds that exist near where you like to hunt. Very nice trout depending on the year and water conditions.
Ducks will either be all pin feathered brown eclipse birds early or 10 days of outrageous hunting during the migration. Still it has to be experienced.
I think I'll miss the night sky the most not going back this year and probably ever again. Being 20 miles from even a yard light and 75 miles from the closest very small town makes looking at the stars at night addictive for me. You seldom find places w/o light pollution in Calif. but the area you're going to has them in abundance.
It's the winters that will be tough. One of the funniest signs I saw back there said, "Remove masks before entering store." So polite but still struck me funny even though it was talking about snow mobile masks and wanting them off so the cameras can get a good look at you.
I hope you love it.
I have hunted there in the winter. It can, of course, get brutally cold. I sometimes felt guilty hunting the thick cover and cattails, busting out pheasants, because I know they use a lot of energy to fly and run in the cold. I do love chasing after grouse, huns and pheasants in the winter and once harsher conditions have set in, the fair weather hunters have disappeared and you pretty much have the plains to yourself.
Goose hunting for honkers can go deep into the winter - they hang around and eat late harvest stuff, even after a lot of water has locked up. If you move to the spring fed creeks and rivers, you can shoot as many mallards as your heart desires later in the season after a lot of water has locked up. I had to really adjust my assessment and scouting methods out there - you drive around a lot with binoculars, spot the waterfowl working a harvested grain field and then ask for permission to hunt if it is private land. Farmers hate waterfowl, so they usually give you permission and shout "kill them all" as you drive off. If you set up on the X in a dry field, you just have to conceal people and dogs and generally stuff your desire to demonstrate what a good caller you are. Staying concealed, keeping quiet and placing full body decoys correctly can give you some off the hook hunts.
I was thinking about the waterfowl season there versus here in California. I have had some great hunts in California, but things are really crowded now and honestly I don't get that many quality waterfowl hunts here for the time spent afield. Heck, duck hunting doesn't really start going in earnest, at least for me, until early December on cold years. On warm years, the migration never really ever happens and the birds short stop California in Washington and Oregon and Idaho. The light bulb went off for me years ago after duck hunting in the Columbia and Snake River basins in late December - all the birds I was waiting for in Colusa were packed into open water up there and feeding on corn, potatoes, oats, wheat and barley. The game of waterfowl hunting has really changed with the gradual shift of warmer weather to the north, the types of crops harvested in the north and the increase in hunting pressure to the south.
Weather can be very variable in Montana and it changes on a dime. For example, the water is still not locked up right now and they are experiencing rain and snow, with lows in the 20s and 40's and highs in the 40's and 60's for this week! There are still plenty of ducks and geese there, at least for now. Next year the water might lock up in November and not thaw until May. You just never know. But it is almost guaranteed that there will be long stretches in the heart of winter there when it is colder than a well digger's ass. Which is precisely why I am moving there, because I like the cold and the people that like the cold. A secondary benefit for a denizen of Santa Cruz, CA like myself, is that butt cold weather sorts the wheat from chaff - there are no homeless drug addicts wandering the streets of Lewistown, mainly because the people there don't put up with that crap, but also because you become a hobocicle if you choose the Santa Cruz lifestyle at that locaion.
I know what you mean about the night sky. You can actually see the Milky Way there and if you are away from city lights, you can actually see by it on a clear night. My new house sits on the relatively uplifted terrace that overlooks the town and has sweeping views of the mountain ranges that encircle the town. The nigh sky does show through at my place, even though there is some light contamination from the town.
I'll be coming back to Santa Cruz, CA for one week out of the month, so I'll get my fill of warm weather and the Pacific Ocean, along with bad traffic, snotty wealthy self-entitled turd herders and meth and heroin addicts. I will probably be yearning to walk across the vast tracts of prairie into the wind with my dog the whole time I am in California. I just can't seem to get my fill of the amount of freedom and serenity I experience when I am there, no matter what time of the year or the state of the weather.
I like the mask sign you saw. I cracked up this spring when I walked into a Lewistown bank to finalize the escrow papers on the house and I noted a sign at the entrance that said "No Firearms Allowed Inside". That, in and of itself, is one of the reasons I am going to reside there.