I'd contact the possible home first, and then get the ducks! If you get them first and the sanctuary person says "no" then you'll be in a predicament. I had a rescued duckling for some years. Jemimah was hatched right out of the shell and then swept into a river where some friends and I were hanging out years ago. I was wading in the water when I spotted a tiny thing floating, and scooped a newborn duckling out of the water! When a bird hatches from an egg they imprint on the first thing they see, so I became mama to this tiny fluffball. I tried numerous times to release her into her natural environment with other mallards, but she always thought she was human and would tremble in fear at the other ducks! Poor thing! We had her for a good eight years before she passed away from natural causes. Go for it if you can rescue a few ducks from someones plate! You'll feel better for it!