| Monday 21st August 2017 | ||
| The highlight of the day was the arrival of two separate Yellow Warblers in the wake of Hurricane Gert. The first to be found was in County Cork at Mizen Head - the fifth record for Ireland and the second at that site following one in August 2008 - whilst the second was discovered at Portland, Dorset - the sixth for Britain and the first for England. Both remained into the evening and represented the earliest ever autumn arrival of a Nearctic landbird in Britain and Ireland. Rarities elsewhere comprised the Laughing Gull still in County Sligo, Caspian Tern in Norfolk, two Wilson's Petrels off the Isles of Scilly, and in Kent the Long-billed Dowitcher, Bonaparte's Gull and two Black-winged Stilts all remain. An Aquatic Warbler was reported in Hampshire at Farlington Marshes and on the Isle of Man an astonishingly early Olive-backed Pipit was seen briefly on the Calf of Man. Scarcities included Rose-coloured Starling and Red-necked Phalarope (together in East Yorkshire), White-winged Black Tern and Hoopoe (together in Devon), Purple Heron (Lancashire), two each of both Spotted Crake and Temminck's Stint, six Pectoral Sandpipers, nine Glossy Ibises, 11 Great Shearwaters, 13 Cattle Egrets and 20 Cory's Shearwaters. |
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| - Chris Batty, RBA | ||