Ideas for mini pig proof duck feeder

[cchicks4]

I have two mini pigs that live with my ducks. Feeding isn’t an issue when the ducks are out free ranging but I’d like them to stay in the fenced area when I’m not home because of increased predators... so does anyone have a design for a feeder that only ducks can eat out of and not my mini pigs. They’re only 15-20 lbs right now. Thanks.

 

[DellaMyDarling]

Perhaps a home made PVC contraption with feed holes just big enough for quackers but not big enough for snorters?

My pig experience is trying hard not to color my response lol