You're dog is 4 months old now but by mid season it's a 6 month old dog and quite a bit of development can accumulate. I would just be very specific in where I hunted him. Grouse cover is typically tight and good woodcock cover even more so. Hard to beat a good woodcock flight to train a bird dog. I would not take him duck hunting at that age. First that might just be too much gunfire as that high speed steel shot barks pretty loud and secondly he will move around so much he will likely spook game. Just my opinion. You have been given some advice above from some very experienced dog trainers for free. Take notes. Great looking pup by the way.
i see you live in Atikokan. I used to hunt moose out that way and you live in bird "Mecca".