The archaeozoological sequence of terrestrial vertebrates from the multicomponent site Dudka, in the former Great Masurian Lake is confronted with other available bioarchaeological data and inferences. This evaluation supports the idea that Dudka island was occupied seasonally by Mesolithic, Zedmar and Late Neolithic people and hunting may have been an opportunistic activity on the island during the spring fishing and the fall gathering season there. The question is raised why people crossed from the mainland to Dudka island for fishing and gathering, fish and nuts being no doubt also accessible on the mainland in the appropriate seasons.