Dave Dawson’s natural history notes for 25th May 2018:-
The most interesting record was the first I have heard a Reed warbler from the public park. There was one in full song in the reeds on the lakeside west of the stadium (near the 7th tee). Martin has had them in previous years, presumably whilst playing the 7th. In contrast, many of the resident bird species have fledged their first brood. So, no tits were singing, but Robins and Blackbirds were singing in the lead up to a second nesting. The water birds were breeding. Coots were sitting. Mallards and Egyptian geese were seen well away from the lake, presumably near their nest sites. There were two broods recently-hatched: one Canada goose and the other Egyptian goose. The Swifts over the lake were so mobile and numerous as to be almost uncountable, but I estimated there were around at least 35 in view at any one time. In only three years in the last 30 have larger numbers been seen in May. Despite claims to the contrary, our site shows that Swift numbers have increased in SW London. They commute several kilometres for good sources of food. There were non-breeding flocks of both Herring gulls and Egyptian geese on the public park which soon left when the gates were opened. Spring flowers are now over, to be replaced by those of summer. There were Dog roses and elders flowering in the hedgerows and Yellow-flag irises around the lake shore and in the Glade. The Glade also had flowers of Red campion, Cow parsley, Creeping buttercup, early grasses and one Corncockle still surviving from the arable seed mix. Two species of sedge have established from seed scattered last year. The list of species seen in the Glade since National Grid departed now stands at 106. This is the best time for any project work there, as many species are in flower, or soon will be. Unfortunately, it clashes to exam time for school children. The easternmost section of the brook had Great Willowherb, Yellow-flag iris and Watercress, all of them wetland species that have colonised from upstream. The hedgerow on the golf course boundary has native Honeysuckle in flower.