im looking for information on this as well. My husband can eat chicken eggs with no issues. a Duck egg makes him very sick, diarrea, stomach pains. This morining we tried a guinea egg scrambled with a chicken egg. he reported that it made him sick like the duck egg so Im guessing he cannot eat quail eggs, goose eggs, turkey eggs or anything except chicken. thing is. I cant find out why? he isnt allergic or intollerant to anything else.He is allergic or intolerant to duck eggs. My whole family can eat duck eggs, but if I do I get terrible stomach pains and vomiting. I can eat my chicken's eggs just fine. I can't even eat baked goods that use duck eggs it's that bad. It's not that uncommon we just don't hear about it as much because duck eggs aren't nearly as popular in the US as other countries.