Most of mine start to 'lurk' the day before feeding. They'll become more attentive when I'm changing their water. They'll lay halfway out of their hides- waiting...
Then Thursday comes and the pre-scenting starts this afternoon and by dark, these guys and gals will be slammin their meal!!
My snakes cruise around in the evening and at night a lot.
I wonder if balls go through 'growth spurts' and so they get more hungry during those times.....????