I pheasant hunt a ton. I've started hopping back in the truck after a walk and opening up my phone's notes app and ripping a few sentences down. Number of birds, whether the weather was notable, location of birds in each parcel, good or bad dog work, good or bad shooting, etc. Then I total the number of flushes, shots, birds harvested, and birds lost. If I don't want to take much time, I'll then refine my notes and add more color/detail once home or done for the day. Makes a really fun set of stats at the end of the year, and re-reading them helps with scouting for different times of the year in future seasons depending on crop cover, weather, time of season, etc. It also helps me remember the hunts better, like taking notes in class. Pretty fun to hunt an area and remember each point or flush, cripple recovery etc. as you're walking through a spot years later. Regarding big game, I don't hunt quite enough to need to document those as a couple deer a year is easy to remember with icloud and snapchat photo memories. Also Apple does a great job with making those little memory video reels. Those are always fun to go through.