The aggressive male Mute Swan was chasing a harmless family of Greylag Geese in front of the Lido restaurant.
Some of the other Greylags had abandoned the area and come over to the other side of the lake, where the goslings were exploring some exciting new plants.
The Black Swan also had a brief run-in with the Mute Swan, but his technique of annoying it from a safe distance seems to be paying off, and the aggressor abandoned the struggle and left him to preen peacefully in front of the Lido restaurant.
A Grey Heron fishing under the parapet of the Italian Garden caught a perch.
In a nearby hawthorn tree, a male Blackcap was scolding a Magpie.
The Reed Warblers near the bridge were hard to see, but one of the young ones looked out of the reeds for a moment.
The male Little Owl near the leaf yard was in his usual chestnut tree.
There was a sight of one of the owlets from the family near the Albert Memorial.
But it was also open day at Brompton Cemetery, and Countrywide Falconry had brought more owls, including a Little owlet about the same age. It bit Virginia Grey.
There were also some very large owls indeed, including this young Eagle Owl, still rather fluffy ...
... and a Great Horned Owl from North America.
It's so long since we had a picture of a Tawny Owl on this blog that we must have the one at the open day.
There was also a Barn Owl, which we saw here last year ...
... and a splendid Saker Falcon.
This is the preferred hunting falcon of Arab princes.