Activate the following cheats by entering the corresponding codes at the specified screen:

CHEAT FUNCTION - CHEAT CODE
Birds more curious, less likely to spook (Hunt or Map screen - dggoldenegg
Increase number of birds (Hunt or Map screen) -  dgluckyducky
Steady gun     (Hunt screen) - dgeggsact
Birds look for feeding spot (Hunt screen) - dgfamine
Weather effects (Hunt screen) - dgsnowgoose
Birds look for a rest spot (Hunt screen) - dgtoughday
Increase hunter talk (Hunt screen) - dgyadayada
View bird icons (Map screen) - dgbirdseye
Ducks only (Map screen) - dgdaffy
Geese only (Map screen) - dgmother
Teleport hunter across map (Map screen) - dgwarp