The 380 is not without merit, as a concealed carry weapon. However, there are now some excellent 9mm pistols that are as small as many 380 pistols on the market.
I think your doubts about it in relation to the 9mm will likely continue to haunt you. Perhaps you should investigate some 9mm models before making any purchase.
In addition, the field activities you described, the uses for your pistol, can all be filled quite nicely with a .22. You might find the less expensive .22 ammo desirable. I am sure that I share whatever pejorative feelings you have about cottonmouths. A .22 is the perfect solution to them.
Goo luck on your cogitations and purchase!