| Tuesday 15th August 2023 | ||
| The Red-footed Booby remained in-situ on Bishop Rock lighthouse in the Isles of Scilly, whilst visitors to the islands also recorded a Fea's or Desertas Petrel from the Scillonian III, three Wilson's Petrels, 400 Cory's Shearwaters and 30 Great Shearwaters.
Elsewhere, a Squacco Heron was at Great Livermere, Suffolk, a Pacific Golden Plover was on Holy Island, Northumberland and a Greenish Warbler was on West High Down, Isle of Wight. Other lingering rarities still present included the Hudsonian Godwit in Shetland, Long-billed Dowitcher and White-rumped Sandpiper in Orkney, Long-billed Dowitcher in Norfolk, seven Black-winged Stilts in Lincolnshire and five in Yorkshire, Stejneger's Scoter and King Eider in Lothian, Black Stork in Kent, Forster's Tern in Dorset and Bonaparte's Gulls in County Dublin and Kent. |
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| - Will Soar, RBA | ||