Almost any bush, shrub, tree in a fence row will collect some dirt in the bark. Obviously loose bark trees such as a shagbark hickory will collect more. If it is Osage Orange, you already have a very tough wood. With just a bit of grit on the outside, it will dull a chain quickly. Sparks will fly for sure. I don't usually mind cutting hickory in the woods, but on the outside, in a fence row, or isolated in a field, it can put your chains to a test. The heck of it is hickory, Osage Orange, and Hophornbeam (some call it ironwood in some locales) are awfully good burning. I guess it is always a tradeoff.