Dynamic, digital maps are increasingly used in many set- tings. It is an emerging domain of technology extending on previous maps studies and positioning technology. We draw upon ethnographic field studies of collaborative hunting, where hunting dogs are tracked and their location made visible on digital maps. We discuss mobility of two differ- ent kinds. First, we refer to mobility as the practice of physical movements of hunters, dogs and prey. Second, we refer to the movement of symbolic objects on a digital map screen, i.e. screen mobility, and the interpretational work that the hunters do to make sense of it. Representations of motion on a screens, are of ongoing practical concern for the hunters. We show how they interpret such mobility in terms of accelerations, distance, trajectories and temporal alignments. The findings are used to revisit mobility theo- ries and populate them with new notions to inspire design in broad domains.