WTB: Call duck eggs or muscovy eggs

I really cannot afford to spend an arm and a leg on eggs that might not hatch. My son is starting in 4h this year and would like some ducks to show. Due to it being 4h I really don't care if they are good show quality. We would just like to get some that he could use. I would prefer call duck eggs even though I have heard that they are hard to hatch but will accept muscovy. I know that our 4h accepts pet quality animals so even if it is a mix of colors that wouldn't be acceptable in a show ring that is ok w/ us. I know it is late in the year for duck eggs but I am hoping that someone might have some. Worth a shot I suppose.