Some excellent northbound passage today, mostly during the first part of the morning. Highlights include: probable Marsh Harrier heading north (distant), 2 Hobbies, 2 Avocets, 6+ Grey Plovers, 8 Knot, 3 Sanderling, 30+ Bar-tailed Godwits, 7+ Whimbrel, 20+ Greenshank, up to 8 Green Sandpipers, up to 5 Wood Sandpipers, Common Sandpiper and 10 Little Gulls. At least one Grasshopper Warbler still singing along east side of Island Pit.