My son and I worked hard in the marsh of SW LA Wednesday and Thursday, and our 2-day bag of 24 birds included 10 shovelers, 6 gadwalls, 6 bluewings, a greenwing and a mottled duck.
When we cleaned the birds, 5 of the 10 shovelers and 2 of the 6 bluewings had sarcocysts (rice-breast). I have no problems eating shovelers and consider bluewings excellent table-fare, but I can't stomach birds with those parasites despite knowing they are harmless to eat. Disappointing .......