Ok, our eggs are going missing, we was thinking that it was the change of seasons and weather. Today I found some egg shells away from the nesting area. What is the cause, according the article it could be racoons, possums or rats. The shells are twenty to thirty feet away. Some time ago I placed some ceramic eggs in the nest to help promote egg laying and hoping any slithering pest would take the ceramic egg, in the hope the problem would died. Any suggesstions?