I've had pekins and muscovies and I remember their eggs as being very large. I was a child then, and maybe I'm getting them confused with the goose eggs we had, too. Now we have khaki campbells and their eggs are smaller, not as large as the chicken eggs we get. Is this because they just started laying or because they are smaller ducks than we had? What size is the average khaki Campbell egg and should ours increase in size? They just started laying this past week at exactly five months old.