I had a late work meeting, so I could only spend about 30 minutes at the Cathedral.  One of the parents was on the Archangel when I arrived, and was soon joined for a few minutes by the other parent.  Their backs were turned to me, so it was hard to make a solid identification.

Then one of the eyasses decided to defecate and move around the nest for about five minutes.  Other than these two events, the nest was quiet.