i just got back from texas. i saw way too many things. more tarantulas than i care to count and scorpions.. just too much. i also hiked out a bairds rat snake, 2 copperheads, and later that same night out in some flats, found 2 subocularis. west texas has some amazing animals.
Of the 6 sidewinders I have found at different times of the year, they were all at about the same level of feeding as those snakes. So yes, I did look at the sidewinders, but no I dont think they are underfed.