Categories David Cygnets swimming in algal bloom patch Post author By David Post date 3 August 2016 By midsummer one section of the West Park lake develops a patch of algal bloom, bright green, floating on the surface. This year’s four cygnets were attracted to swimming in the patch, seeming to be scooping it off the surface and eating it. ← Bur reed burs → Coot nest among water lilies, Fowler’s Park