sehunter1 wrote:If you can observe them without spooking them I would dedicate a morning to study what they do. Are they roosting there, showing up to loaf or just stopping in for a drink? In my experience your best bet is to let themeave on their own then slip in with six or so of your cleanest best looking decoys, hide very well and let them trickle back in. If they show up daily I may not even take decoys.
Great advice. See what they do. The knowledge you gain from this scenario will help you in any future scenarios which may have similar circumstances. If they don't call much, don't call much. If there's only 5 or 6 ducks sitting on the pond at one given time, don't throw out the whole bag.
Good luck, and be sure to post pics of the birds if you manage to scratch out a few!!