Mother was an olive egger and father was a welsummer. All the other chicks that hatched laid olive eggs. I bought her prior to her laying. Olive spent 45 minutes in the nest and sang and carried on until I had to leave. I came back to two eggs in the nest. I know one is from my sex link. How can I for sure know this egg is from her? The egg on the left is from the sex link and the one on the right is from what I think is the olive egger. I found one last week just as small and thought it was from my bantam cochin.