This is GREAT info!!!
Based on what I've read in this thread, it seems like the top 20 duck treats are probably:
Peas
Bok Choy
Floating Koi Food
Cat fish Food
Tomatoes
Grapes (Red or green, halved)
Corn
Lettuces (Romaine, Bib, Butter, Radicchio, etc.)
Worms/night crawlers/mealworms
Feeder...