Hi,
I’m Scot and new to bluebirding. I have a nest box with 4 eggs. Today is around day 12 of incubation. I found an empty destroyed blue bird egg near my bird bath today, which is a few feet from the nest box. The 4 eggs are still there and the mom is still incubating. There are no other signs of distress or trauma and no baby bird parts anywhere……………just the destroyed egg and yolk.
Thoughts?