One of the pair of Herring Gulls that hang out in the Diana fountain enclosure was dancing to attract worms to the surface. This works remarkably well, and it pulled up four in the same spot within a minute.
The pair always hunt within a small area the size of a singles tennis court. It is not clear whether this is an unusually wormy patch or whether it is simply the gulls' habit to go there.
There is no doubt that the north end of the Long Water near the Italian Garden is full of fish. One of these was seeing its last daylight as it was swallowed by a Cormorant ...
... and a Great Crested Grebe was also finding plenty under the dead willow tree.
The family of Moorhens in the Italian Garden are still together and may often be seen foraging in the grass strips down either side of the garden. They are probably looking for small grubs, but a Moorhen will eat almost anything -- the secret of their success.
A Blackbird behind the Lido ate an ivy berry. Like many berries these are poisonous to mammals but nutritious to birds, which later deposit the seeds undigested and help the plant to spread.
On the terrace underneath, the odd couple were wandering around together. They have been mates for years but have never produced any goslings. It is very likely that the Canada-Greylag hybrid is sterile.
The Grey Heron nest on the Serpentine island was occupied again. But the birds don't seem to be serious about nesting, and only occasionally add twigs to the big heap.
The twig held by this Black-Headed Gull is just a toy. They migrate away in spring to breed, some of them going to northern Europe and some to local landfill sites, a rich supply of food if you aren't fussy.
Robins are singing all over the park. This one was in the Dell.
The name 'Robin' is a remnant of the medieval habit of giving familiar birds personal names: Robin Redbreast, Jenny Wren, Philip Sparrow, Jack Daw. In this case the first part of the name has survived into modern usage; with the Wren it is the other way round.