A robin has been nesting for the last few years in a bush near my deck. I had noticed the robin hadn't been around in the last couple days, so I peeked in to see the nest and noticed some odd things: there were actually two nests built almost on top of each other, one was empty and the other had one egg. I think I saw a chipmunk attack the nests a few days ago, he jumped in and the mother robin was flying around going crazy. But I'm not sure chipmunks even eat eggs. Do chipmunks kill Robin eggs? And, in the event some of her eggs were destroyed, would a Robin abandon the final egg?