| Tuesday 20th April 2021 | ||
| The highlight of the day was the discovery of an Eastern Subalpine Warbler in Cornwall at Treeve Moor, whilst a Bonaparte's Gull
was indentified in Leicestershire at Rutland Water, and the first Black-winged Stilt
of the spring arrived at Rainham Marshes, London. Rarities elsewhere comprised the American Herring Gull still in Cornwall, the territorial Iberian Chiffchaff still in Suffolk, Bee-eater on the Isles of Scilly, Long-billed Dowitcher in North Yorkshire, Bonaparte's Gull in Glamorgan, Lesser Scaup in County Fermanagh, Richardson's Cackling Goose in both Highland and the Western Isles, and White-billed Divers in Aberdeenshire and the Orkney Isles. Scarcities included Woodchat Shrike and Pectoral Sandpiper (Cornwall), Serin (Norfolk), Hoopoe (County Cork), Night Heron (Devon), American Wigeon (Shetland Isles), Green-winged Teal (East Yorkshire), Great Grey Shrike (Hampshire), two each of both American Golden Plover and Wryneck, three Glossy Ibises, five Lapland Buntings, and a total of eight Ring-necked Ducks. Significant late news concerned a Subalpine Warbler present yesterday in Cheshire at Burton Marsh. |
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| - Chris Batty, RBA | ||