| Tuesday 4th May 2021 | ||
| Discoveries today included a Red-rumped Swallow in East Yorkshire at Kilnsea, and
Black Kites in both Aberdeenshire at Collieston, and Norfolk at Bawsey. Lingering rarities confirmed as still present were the American Herring Gull in Cornwall, Gull-billed Tern in County Donegal, Whiskered Tern in Dorset, Eastern Subalpine Warbler on the Shetland Isles, Spotted Sandpiper in Lothian, Lesser Yellowlegs in Worcestershire, Kentish Plover in Suffolk, White-billed Diver in Moray, Marbled Duck in London, and singles Bonaparte's Gulls in each of Glamorgan, Highland, and Worcestershire. Scarcities included Woodchat Shrike (Essex), Golden Oriole (East Sussex), Purple Heron (Isles of Scilly), Surf Scoter (Lothian), Ring-necked Duck (Dorset), Green-winged Teal (Angus), Shorelark and Grey-headed Wagtail (Norfolk), two each of Hoopoe, Wryneck, and Temminck's Stint, and five migrant Dotterel. |
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| - Chris Batty, RBA | ||