1). 1887 Tresco, adult, shot, 10th September, photo.
(T. Cornish, Zoologist 1887: 388; J. Clark & F. R. Rodd, Zoologist 1906: 342; J. Clark, Journal of the Royal Institution of Cornwall 17: 136; Witherby, 1920-24; Penhallurick, 1969; Birding World 20 (8): 338, photo; Flood, Hudson & Thomas, 2007: plate 55; T. Melling, British Birds 103: 80-92).