Use the following codes at the indicated screen:
dgluckyduck: (Hunt or Map) lots of birds
dggoldenegg: (Hunt or Map) make birds less scared
dgbirdseye: (Map) view bird icons
dgwarp: (Map) hunter can teleport on map
dgeggsact: (Hunt) gun is stable
dgpredator: (Hunt) unlock super vision
dgfamine: (Hunt) birds look for feeding site
dgsnowgoose: (Hunt) weather effects