Hey y'all! We have 3 columns on our back porch that are about 8 feet tall and covered by the patio roof. Every year in May, we have a robin build a nest on the column that's a few feet from our back door and we get to watch the whole process over the next month. I have loved it! We've already had one successful brood of three babies this year, which left the nest about a month ago. Shortly before we left for vacation, we noticed a robin had started building a new nest on top of the old nest. It didn't look very sturdy when we left for the beach, which was June 19th. We returned home on June 27th to find only one egg in the old nest and no remnants of the nest she was building on top. She has been sitting on that one egg ever since. I'm curious as to what you guys think happened. I live in a subdivision with a fenced back yard and don't have any cats or anything. Since living here, we have had one successful brood of four babies each, each year, for the past four years, and haven't ever noticed any other birds bother them while in the nest. I wish I could just be ok with not knowing what happened but I'm one that wants an answer, haha! I'm going to be so sad for her if this egg is a dud. Thanks for any help!