Today's post is late -- sorry. After a brief visit to the park, it was off to the Tate Modern, where I was glad to see one of the resident Peregrine Falcons flying up the river. (I believe the place is an art gallery too.) So I have seen two pairs of Peregrines in London in three days, as I saw the birds on the Metropole Hilton Hotel on the 25th -- here is a very distant shot of the female on her 200 ft tower.

At the Tate, I met some people from the RSPB who had set up telescopes to give the public a view of the Peregrines. We need more of these beautiful birds in central London, and there are more than enough pigeons to satisfy them.

On the Serpentine, a Grey Heron had finally found a good use for a health-'n'-safety sign.

The newly returned Mute Swans are settling into their usual routine. Their mother brings the cygnets across to muscle in on some harmless Greylag Geese that are being fed. In the background, their father keeps watch for rivals.

There were a large number of first-year Lesser Black-Backed Gulls on the Serpentine, at least 30 of them at the eastern end of the lake. At least I think they were all Lesser Black-Backs, judging by the shape of their bills, which are slimmer than those of Herring Gulls. Otherwise the two species look almost identical at this age.

In the Italian Garden, a hungry young Moorhen reaches across for a large beakful of algae.