The first notable bird of the day was a Mistle Thrush, which turned out to be nesting in trees surrounding the car-park. I got to the water's edge near the cafe where I heard a singing Reed Warbler, my first this year. Unfortunately it failed to show itself.
I decided to walk anti-clockwise around the lake, and was about a quarter of the way around when I spotted a Common Tern on one of the buoys.
We walked the rest of the way together, noting singing Treecreeper and Nuthatch, and a pair of Oystercatchers on the heron island. There must be a chance that they will attempt to breed.
Anyway, the three new species seen today were all birds I have yet to record at Morton Bagot this year, and none is guaranteed to occur there.