My blue has now laid 17 eggs, of which 15 are in the nest. The other 2 were not developed all the way. Today I caught my cat in the duck house. He didn't hurt the eggs, but now moma doesn't want to go in. If she does go in tonight, which is when she usually does, how long before she is done having eggs and wii finally start sitting on them? It's been almost 20 days since she laid the first egg. It is starting to get cold at night and I am worried they wont make it.