The Painshill grieving Grebe has left the lake and the nest has been taken over by a Coot. The other pair of Grebes have made a nest by the long thin island near the vineyard, and have at least one egg.
Update 27/4/10: The GC Grebes' vineyard nest (see above) was abandoned and the eggs gone. The Grebes were vainly trying to build a new nest by piling up weeds in the middle of the lake, needless to say without success. A single GC Grebe was foraging in the north lake; possibly the survivor of the original pair has returned.
Around the Grotto, a Wren was searching the rock crevices for insects.
Similarly employed was a Grey Wagtail, collecting insects presumably for a nest full of chicks.
While I was in the Grotto, a Swan flapped noisily into the confined space of the tunnel, frightening everyone there.
Painshill Park is at Cobham, Surrey. For further details, see http://www.painshill.co.uk/.