1). 1920 Tresco, female, shot, 17th January, photo, now in the Isles of Scilly Museum.
(D. Seth-Smith, Bulletin of the British Ornithologists' Club 40: 155; Eds., British Birds 14: 67; Witherby, 1920-24; Penhallurick, 1969; BOURC (2000), Ibis 143: 172; A. G. Knox, British Birds 94: 61-73, plate 37; Flood, Hudson & Thomas, 2007: plate 11).