Heard from Dan and Brooklyn and Hurricane are still incubating and expected hatch date is this week. There are however, two eggs in the box now, not four. We have no idea what could have happened but the site is not accessible to anything but the peregrines so chances are, the eggs weren't viable and the adults disposed of them. Princess and Trey used to do that regularly, so the ability to spot non-viable eggs could be Hurricane's inheritance from her parents.