I would like to know what breed of chicken this is. I thought she was a Wyandote with slightly different plumage. However, today I found a WHITE egg in the nesting box. My other 11 hens are as follows, 2 - RIR, 2 - BA, 2 - BO, 2 - SLW, 3 - BR. All of these birds are brown egg layers. The egg is question is not a light brown, it is most definitely, WHITE. Thank you for your help.