These Codes work in hunt and map view:

 DGGOLDENEGG - Makes birds more curious, less likely to spook
 DGLUCKYDUCK - Many birds

 Only in map view:

 DGBIRDSEYE  - Show bird icons
 DGWARP      - Allows hunter to teleport across map

 Only in hunt view:

 DGEGGSACT   - Stops gun wobble
 DGFAMINE    - Makes birds look for a feeding site
 DGPREDATOR  - Predator effect
 DGSNOWGOOSE - Weather effects