The Black Swan was being very aggressive on the Long Water. I arrived just after he had chased the dominant male Mute Swan, and found him swaggering around and doing his peculiar threatening display.
This is quite different from a Mute Swan's threat posture and at first didn't mean anything to the other swans, but now they have learnt to fear it. After this he went over to the adopted cygnet and displayed triumphantly.
Unaffected by all this chasing and posing, the Great Crested Grebes were getting on with the serious task of feeding their chicks.
The broken horse chestnut tree on the west side of the Long Water near the Queen's Temple is a favourite place for Grey Herons.
It's also a dangerous place, as there is a family of foxes underneath. Two herons have died when they swooped down to the ground to catch a rat, and were caught themselves.
The holly tree north of Peter Pan was full of Starlings making a tremendous din. Mostly they stay inside the tree and are more or less invisible, and the noise puzzles passers-by. One of them came out on a twig for a moment.
A flock of Long-Tailed Tits passed through the bushes.
A sunny Sunday had brought a lot of people to the leaf yard to feed the Rose-Ringed Parakeets. Some, rightly fearing being bitten, stick apples on the twigs.
They didn't notice the Little Owl in the chestnut tree a few yards away.
One of the owls near the Albert Memorial was also visible until a Wood Pigeon knocked him off the branch.
Little Owls can win against Stock Doves, but Wood Pigeons are large and surprisingly aggressive.
The Moorhens in the Dell are still making their new nest.
Two of the chicks were on the bank, eating each other's parasites. The original nest seems to have been unusually lousy -- is that why it was abandoned, and all these others have been built?
A Migrant Hawker dragonfly rested for a moment in the reed bed near the bridge.