We took the opportunity of the empty nest box to do some work on it, move the camera and install a second one on a boom outside looking directly at the nest box. We also left some food on the ledge in case one of the owlets did come back. Then this happened.
A buzzard came and in an instant had made off with the field vole. Buzzards are known to take birds, particularly fledglings and though we will never know for sure this could explain the sudden disappearance of the two owlets.
Here’s the video in slow motion.