Does the possession limit on ducks and pheasants mean the number I can have at home or the number I am allowed to have while hunting?
Both. The number of pheasants, ducks or, for that matter, fish is the number you can legally have in your possession, period. Possession is defined as the number of game birds, fish, etc. in transit or storage. Be sure to check the regulations for the daily bag limits and possession limits in the various hunt areas.
Does my 2002 hunting license expire before duck season ends? Do I need a new federal waterfowl stamp?
Yes, you need a new Idaho hunting license come January 1, 2003, but your federal waterfowl stamp is valid through the end of the current waterfowl season.