1). 1969 Abbey Pool, Tresco, adult, 19th August, photo.
(F. R. Smith and the Rarities Committee, British Birds 63: 277; M. J. Rogers and the Rarities Committee, British Birds 71: 500, rejected; D. I. M. Wallace, British Birds 72: 264-274, rejected; M. J. Rogers and the Rarities Committee, British Birds 78: 546; BOURC (2006), Ibis 149: 194; Flood, Hudson & Thomas, 2007: plate 51).