The rain was horizontal at high water 10:30. This was compounded with driving sea spray. You'd have to be a fool to venture along the south wall....... Anyway, this is what I saw (MD)
Common Tern - just one feeding on No.2 outflow. Later (11:15) two, together, battled past the lighthouse.
A second visit just after low water (17:30) the rain had eased off, and of course no driving sea spray.
Common Tern - 4 feeding on No.2 outflow