Court heard that the three were hunting southwest of Dryden in December 2010 when they came upon a bull moose.
The Ministry of Natural Resources says Edward Smith left the vehicle and shot the moose while standing on the road.
The animal ran into the surrounding bush and was retrieved by the hunting party.
Edward Smith has been banned from hunting in Ontario for 2-years.
Lisa and Russell Smith are both banned from hunting for 1-year.