A Chiffchaff sang in the scrub between the bridge and the Vista.
The Cetti's Warbler in this area has been singing loudly for several days, but is hard to see even for a moment and next to impossible to photograph. I had my once-in-a-lifetime opportunity on 9 December 2015 -- see here -- and don't expect another.
A female Blackbird was washing in the Serpentine.
A Pied Wagtail caught a midge beside the Round Pond.
At the leaf yard, a Jackdaw looked into a plastic bag which had contained cakes from a café in Kensington High Street. There wasn't a crumb left, but it continued to play with it. An envious Magpie came over but the Jackdaw, now joined by its mate, kept it at bay while the pair enjoyed their game.
The Grey Herons in the top nest of the island were fondly caressing each other with their fearsome bills.
A pair of Great Crested Grebes were having a territorial dispute on the Serpentine. They had a display of solidarity.
So, of course, did the rival pair a hundred yards away.
The two Coots on the right were fighting. Three more rushed over to join them.
A pair of Canada Geese did a synchronised splashing display before mating.
Tom was there and took a video.
The Egyptian Goose family at the Lido had somehow got two of their goslings outside the net and one inside. There are holes in the net, so no doubt they were able to sort things out.
Blondie was keeping a close watch on her brood. When a dog appeared in the distance she quickly led them to the water.
This is the family at the Round Pond. The rule is that when your mother preens, you preen too.
The Mandarins on the Serpentine chased each other.
The Little Owl in the lime tree near the Henry Moore sculpture was out on her usual branch.
A Comma butterfly rested on a leaf near Peter Pan.