I haven't caught one yet to know. The guy I bought them from said if I waited a couple years after stocking bass and allowed them to grow, the crappie would not get out of hand.
My brother and I fished for 3 hours Sunday with crickets and earthworms. We caught 1 big bluegill maybe 10 very small bluegill, but 4 or 5 big healthy bass- 2#.
But to answer your question: I think they are hiding from bass.