I have 3 Pekin hens that are all over a year old and have been laying magnificent large white eggs almost every day. I also have 2 Pekin hens and 2 Khaki Campbell hens that are spring ducks and are just starting to lay eggs. In everything that I have read, Khaki Campbells lay white eggs. Three times in the last week I have found a smallish GREEN egg in the duck yard!! Since it is small I know it is coming from one of my Khaki hens. Can Khaki Campbells lay green eggs? I know that Khaki's are a cross between a Runner and a Rouen and Runners lay green eggs. One of my "Khaki's" stands up taller, like a Runner duck (but not quite as tall as a pure Runner duck). Do you think she might not be a pure Khaki and has more Runner in her and that is why I'm getting green eggs? I'm baffled! I never expected green eggs!