Our pair laid started laying their very first set of eggs 9 days ago. The eggs were being laid when we were having below normal temps and the final one was laid last Friday when the female had begun laying on the nest full time. This morning I see both male and female on the pond so check the nest and there are 0 eggs. ( there were 4) I realize that things happen and have heard of other animals getting to the nest however I am doubting that was the case. My main question is that I have read that the Swans will remove eggs if they are not fertile or will leave the nest themselves. But how do they know early on if the eggs are not fertile, I had read that they will not feel movement and they will remove or move from the nest but I assume that would not happen within a few days? Also do they eat the egg, shell and all? One last question, in most cases will they mate again this season due to this time being unsuccessful. Thanks!