alot of luck, my dad has been duck hunting for 30 years and only has gotten one banded bird, meanwhile hes gone on hunts and dropped birds out of the same flock as his partners and even in the same flock hed get the un-banded birds, meanwhile i have been hunting(where i actually shoot) for 5 years, and in my fourth year i got a drake mallard that was banded as an adult in Alberta Canada in 2000, i got it in 2007, BIG drake lol