This Treecreeper in the Flower Walk 'froze' when I was photographing it. They do this when predators threaten, relying on their excellent camouflage to stay unnoticed. It isn't the usual behaviour when humans lumber into view, which is of course to rush round to the far side of the tree. Possibly it had seen some creature more alarming than me, such as a Magpie.
A pair of Ring-Necked Parakeets were being very affectionate in front of that supreme display of love the Albert Memorial, Britain's equivalent of the Taj Mahal.
And the Great Crested Grebes at the Serpentine island were also clearly very fond of each other.
Not that this is a surprising in a pair of Great Crested Grebes, who spend a great deal of time in displays of affection. Even if one of a pair goes round the far side of the island for ten minutes there will be a greeting ceremony when they are reunited.
This male Mute Swan was in a completely different mood, chasing off everything in sight.
On the other hand, this aggression would have impressed his mate, so different birds express their affection in different ways. All the swans on the lake are in a savage mood as spring approaches, and the male on the Long Water was chasing a harmless Greylag Goose just for the fun of it.
The male Tawny Owl was on his balcony as usual, faithfully guarding his mate who is inside the tree on her nest. If they are on schedule the owlets will be hatching now.
There are still Redwings on the Parade Ground near the bandstand. I only saw three, but they were flying into a tree which may have held more of them.