With my ducks it depends on the day. They are super picky. Fresh pumpkin not. Honeydew melon yes - as long as I gave it to them in quartered large pieces with rinds intact - they would not eat the pieces when I choppedthem into small bits and removed the rind. Frozen peas they love regardless. Chopped cabbage is a yes. Leafy lettuces are okay, but not iceberg. Pineapple and pomengrante no. Cukes yes. Peaches are a no. Apples are a no. Potatoes selectively as long as they are mashed well and still warm. Cantaloupe is a no. Trial and error. I have quite"wasting" quantities of anything until they try it first.....just like little kids! "Try it, you might like it, and if you don't I will save it for the humans instead of attempting to spoil the ducks - more!" They prefer dandelions, their feed, and frogs when they can find them!