There was quite a bit of bird action in the NW of the patch at dusk, and luckily I was there to see it.
At least twenty Swifts and forty Swallows were feeding over Freeman's Wood after sunset, and the rustling sound of Sand Martins was heard over Freeman's Pools.
A male Wheatear (pictured below) was feeding at Marsh Point, as were two Common Sandpipers. The Arctic Tern pictured above flew downstream here.
Evening birdsong included Blackcaps, Willow Warblers, Chiffchaffs and Whitethroats-- but no Sedge or Grasshopper Warblers were heard.