1). 1920 Abbey Pool, Tresco, shot, 7th September.
(P. R. Lowe, Bulletin of the British Ornithologists' Club 41: 26-27; Eds., British Birds 14: 167; Witherby, 1920-24; A. A. Dorrien-Smith, British Birds 33: 113; Penhallurick, 1969).
2). 1921 Tresco, seen, 19th August to 17th September.
(Eds., Ibis 1927: 782; Eds., British Birds 21: 162; Penhallurick, 1969).
3). 1943 Tresco, seen, 12th to 28th September.
(B. H. Ryves, D. Valentine & H. M. Quick, Cornwall Bird Watching & Preservation Society Report 1944: 46; Eds., British Birds 38: 358; Penhallurick, 1969; Penhallurick, 1978; Robinson, 2003).
4). 1967 Watermill Cove, St Mary's, 26th to 29th October.
(F. R. Smith and the Rarities Committee, British Birds 61: 341).
5). 1973 Abbey Pool, Tresco, 2nd to 17th September.
(F. R. Smith and the Rarities Committee, British Birds 67: 322).
6). 1974 Porth Hellick Pool, St Mary's, 11th to 18th May.
(F. R. Smith and the Rarities Committee, British Birds 68: 317; D. S. Flumm, Isles of Scilly Bird Report 1974: 24).
7). 1980 Great Pool, Tresco, juvenile, 20th September to 6th October.
(M. J. Rogers and the Rarities Committee, British Birds 74: 472).
8). 1980 Lower Moors and Porth Hellick, St Mary's, juvenile to first-winter, 7th to 30th October; Tresco, 31st October to 4th November.
(M. J. Rogers and the Rarities Committee, British Birds 74: 472).
9). 1992 Lower Moors, St Mary's, juvenile, 26th August to 22nd September.
(Birding World 5 (9): 330, photo; M. J. Rogers and the Rarities Committee, British Birds 86: 484; Isles of Scilly Bird Report 1992: photo).
10). 2001 Abbey Pool and Great Pool, Tresco, juvenile, 30th August to 28th September.
(M. J. Rogers and the Rarities Committee, British Birds 96: 572).
11). 2003 Porth Hellick Pool, St Mary's, juvenile, 18th September to 8th October, photo.
(Birding World 16 (10): 399, photo; M. J. Rogers and the Rarities Committee, British Birds 98: 659; Flood, Hudson & Thomas, 2007: plate 60).
12). 2004 Municipal Dump and Lower Moors, St Mary's, first-winter, 1st to 7th November; same, Trenoweth, St Mary's, 8th to 9th November.
(M. J. Rogers and the Rarities Committee, British Birds 98: 659).
13). 2007 Porth Hellick Bay, St Mary's, 15th October.
(N. A. J. Hudson and the Rarities Committee, British Birds 101: 544).
14). 2008 Porth Hellick Beach and Lower Moors, St Mary's, 30th April to 1st May, photo.
(N. A. J. Hudson and the Rarities Committee, British Birds 102: 557; Isles of Scilly Bird and Natural History Review 2008: 55, plates 15 & 16).
15). 2009 Porth Hellick Pool, St Mary's, adult, 12th to 28th August, photo.
(Birding World 22 (8): 317, photo; N. A. J. Hudson and the Rarities Committee, British Birds 103: 591).
16). 2010 Big Pool area, St Agnes, adult, 9th to 13th August, photo; presumed same, Great Pool, Tresco, 15th to 16th August, photo.
(Birding World 23 (8): 329, photo; N. A. J. Hudson and the Rarities Committee, British Birds 104: 584-585).
17). 2011 Porth Killier, St Agnes, juvenile, 11th to 13th September, photo.
(N. A. J. Hudson and the Rarities Committee, British Birds 105: 586).
18). 2011 Porthloo Duck Pond, St Mary's, juvenile, 25th September to 3rd October, photo; presumed same, Lower Moors, St Mary's, juvenile, 26th September to 19th October, photo.
(Birding World 24 (10): 411, photo; N. A. J. Hudson and the Rarities Committee, British Birds 105: 586).
19). 2011 Great Pool, Tresco, first-winter, 3rd October to 15th November, photo.
(N. A. J. Hudson and the Rarities Committee, British Birds 105: 586).
20). 2016 Porth Hellick Pool, St Mary's, 1CY, 3rd to 12th September, photo.
(C. Holt and the Rarities Committee, British Birds 110: 582).
21). 2016 Big Pool, St Agnes, 1CY, 12th to 29th September, photo.
(C. Holt and the Rarities Committee, British Birds 110: 582).
22). 2019 Great Pool, Bryher, 11th to 12th May, photo.
(C. Cillia, Isles of Scilly Bird and Natural History Review 2019: 90, photo).
23). 2019 Great Pool, Tresco, 10th to 26th September.
(C. Cillia, Isles of Scilly Bird and Natural History Review 2019: 90, photo).
24). 2020 Abbey Pool, Tresco, 26th to 31st October, photo.
(C. Cilia, Isles of Scilly Bird and Natural History Review 2020: 72, photo).
25). 2021 Porth Hellick, St Mary's, 9th to 12th May, photo.
(C. Cilia, Isles of Scilly Bird and Natural History Review 2021: 70, photo).
26). 2021 Great Pool and Abbey Pool, Tresco, 8th to 26th August.
(C. Cilia, Isles of Scilly Bird and Natural History Review 2021: 70).
27). 2022 Great Pool, Tresco, adult, 31st July to 14th August, photo.
(C. Cilia, Isles of Scilly Bird and Natural History Review 2022: 70, photo).
P). 2024 Appletree Bay, Tresco and Great Porth, Bryher, 14th to 19th October, photo, two, 22nd October.
(birding information services).