Two Mallard drakes were fighting at the Vista.
A Shoveller looked on serenely.
A young Great Crested Grebe did absolutely nothing, with a certain style.
A Carrion Crow had a brisk wash in the Round Pond.
The brown object this Coot is holding is an ash key. These large nutritious seeds are eaten by many birds, including Great Tits and Chaffinches.
A male Chaffinch in the rowan trees on Buck Hill preferred the pips of the fruits, spitting out the sweet pulp.
But Mistle Thrushes gladly eat the whole fruit.
A flock of Long-Tailed Tits went by.
A Starling at the Lido restaurant was ready for its close-up.
It posed obligingly in front of the Go-Pro camera for half a minute while the owner videoed it by remote control. This is a good way of getting close-ups without frightening the bird -- but only if it stays in shot.
The pigeon-eating Lesser Black-Backed Gull and his mate were calling loudly on the roof of the Dell restaurant.
The edge of the roof of this peculiar building seriously needs maintenance. It was one of two restaurants of a striking modern design that were built in the 1960s. The other one, with an outside formed of a row of octahedrons, was on the south side of the Serpentine near the bridge. It only lasted a few years before it was demolished. I don't know whether this was because it was structurally unsound or just uneconomic.
This Black-Headed Gull is from Denmark. It has been seen in the park in previous years.
Two Cormorants were drying their wings amicably side by side on the baskets of water plants at the edge of the island.
These baskets have never done well, unlike the reed rafts at the east end of the Serpentine which are a dense mass of plants -- maybe something to do with the choice of plants, or perhaps the artificial mat in the bottom of the basket that acts as a substitute for soil.