Treats for Ducks?

I have four pekin ducks and they LOVE watermelon but i'm trying to find some new treats to give them. online, i saw a website for treats you can give chickens and among them was oatmeal and yogurt. i was wondering if ducks could have the same things. thanks!

Here is a HUGE list of other oods you can give your duckies:
Diet Supplements:
Romaine Lettuce (other dark lettuces, not iceberg)
Tomatoes
Worms
Nigh Crawlers
Cucumber
Cracked Corn
Eggplant
Peas
Bell peppers
Carrots
Eggs (scrambled or hardboiled chopped with shells on)
Beans (overcooked)
Feeder goldfish/minows/guppies
Plain yogurt
Mealworms
Broccoli
Cabbage
Brussel sprouts
Cauliflower
Beets
Asparagus


Special Treats:
Floating Koi Food (they love this stuff in their bath or pond, good protein)
Cottage cheese
Apples (applesauce)
Bananas (no peel)
Marigolds, pansies, clover (from a florist or homegrown, no pesticides!)
Pears
Peaches
Cherries
Grapes
Melons (cantaloupe, watermelon)
Squash
Pumpkin
Pomegranate
Turnips (cooked)
Raisins
Zucchini
Oatmeal (cooked)
Strawberries
rice (cooked, small amount)


These Treats are No-No’s!!!!
Bread
Crackers
Spinach
Onions
Potatoes
Avocados
Seeds of any kind
Chocolate
Sugar
Junk food of any kind
Nuts
Citrus (lemons, grapefruit, oranges, limes)
Popcorn

thank you sooo much! that is wonderful!!

Why not bread or crackers? I am forever throwing out the ends to the ducks. I also throw out stale cereal.

My ducks love them some grapes!

Mine go nuts over peas!

What about Kale? I thought that was on another post that had a list of things they can have. So I found a huge bag for a decent price and got it for them. They are really enjoying it. Is Kale a good thing or not?

Why not Icebreg Lettuce?

It's pretty empty nutritionally

What is wrong with "seeds of any kind". Can bird seed harm them if they get into it?

We are debating this right now on another thread.

https://www.backyardchickens.com/forum/viewtopic.php?id=135725

I had mallards that LOVED snails - kids in the neighborhood would collect them and come by just to watch the ducks chow down!