The aircraft was making a landing 45 minutes before first light. During the landing roll a wallaby was seen bounding towards the aircraft. The animal was struck by the left maingear leg and the force of this collision resulted in portion of the wallaby being flung into the left flap. The aerodrome boundary fence is of the standard post and wire construction, which is relatively easy for wildlife to negotiate. Discussions with local residents indicate that wildlife numbers are greater in this area than they have been for some years.