| Tuesday 21st April 2026 | ||
| New rarities today consisted of a Black Kite at Ashton, Cornwall, Pallid Harrier at Nybster, Highland, and King Eider at Lerwick harbour, Shetland.
Rarities included Lesser Scaup in Hertfordshire, Lesser Yellowlegs in Cornwall and Lancashire, Hume's Warbler in Suffolk and Warwickshire, White-winged Scoter in Fife, Black Scoter in Fife, Stejneger's Scoter in Fife, Dusky Warbler in Cornwall, Long-billed Dowitcher in Angus, Iberian Chiffchaff in Suffolk, Black Kite in Cornwall, Forster's Tern in Dorset, and Zitting Cisticola in Suffolk. |
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| - Ben Clark, RBA | ||