I purchased what I was told a Barnevelder pullet but I am questioning that. She doesn't quite look like pictures I've seen. I also understand that they often don't lay until 8 to 10 months of age. She has been going in the nesting box since about 5 months of age. She is currently 6 months. Two times I've seen her come out of a box only to find an olive egg in it. Do I have an olive egger?