I was out looking for Powerful Owl at a spot in Amamoor State Forest, in the Sunshine Coast hinterland, where I found a Powerful Owl last year (see here for details). No Powerful Owls, but I heard a Masked Owl calling a little after dusk. Soon this male bird was showing itself very nicely.
A bothersome gut ache that morning gradually worsened during the day and at lunchtime I was admitted to Nambour Hospital. My appendix had ruptured! It was removed late that night - 24 hours after I was chasing owls in the forest. It is good that I had not been in the back blocks of Cameroon or Tibet or some such place.