Best pesting is just as winter is losing its grip and previous years survivors are in a breeding frenzy chasing one another all over the fields & new growth alfalfa is pretty non existent. Late march into mid may can be epic !!! When the females are birthing / nursing post then only the males are out and there pretty skiddish as the first growth Alfalfa is still too low to offer much food or protective cover just yet. When the youngsters come out several weeks later they hang by the burrow entrances and thats when times can be really nuts !!! as they have no clue of whats happening around them be it good or bad

small targets but plentiful. Using a .17 hmr then is like bowling .. hit the lead pin ( Squirrel ) and the whole cluster that I've witnessed at 4-10 individuals simply vanish in a cloud of flesh mist

Later in the spring season you get, taller becomes the alfalfa and the squirrels can only be seen when they stand up or if lucky able to pick them off burrow dirt mounds. Really need to find a contact person you can call there locally to hear how the weathers doing, 1st cut on the alfalfa etc ... It's is pretty wild place and the year to year weather by the months does flux quite a bit. Hard winters kill more squirrels too than mild winters. Populations ebb and tide so one must enjoy being there good shooting or otherwise.
Do have fun tho ... Nothing quite like it.