ducks not laying many eggs

[t ducks]

I live in northeastern Wisconsin my duck went from laying 15 to 18 eggs a day April through June then in July they went to 5 to 8 a day and haven't produced more since then anyone have any ideas what i should do they will be a year old this month and i raised them from 2 day old chicks

 

[Amiga]

Welcome!

Here are some things that can reduce the number of eggs

Stress
Food issues
Parasites
Egg predators
Egg hiding

So could you write about what's been going on in their lives? What's their shelter and pen setup?