Sylvia sibilatrix.Meyer, British Birds, Folio Ed., vol. i, pl. 69 (coloured figure of adult and egg) [1835-43]; Hewitson, British Oology, 1st Ed., vol. i, pl. 118, fig. 3 (egg), 1837; id., Eggs of British Birds, 2nd Ed., vol. i, pp. 99-100, pl. 28, fig. (egg), 1846; id., id., 3rd Ed., vol. i, pp. 135-136, pl. 36, fig. 3 (egg), 1856.
Phyllopneuste sylvicola,Macgillivray, British Birds, vol. ii, pp. 364-370 (woodcut of head), 1839.
Phyllopneuste sibilatrix,Gould, Birds of Great Britain, vol. ii, 2 pp., pl. 67 (coloured figures of adults), 1862.
Phylloscopus sibilatrix,Yarrell, British Birds, 4th Ed., vol. i, edited by Newton, vol. i, pp. 427-431 (woodcuts of bird and nest), 1873; Dresser, Birds of Europe, vol. ii, pp. 497-501, pl. 77, fig. 2 (coloured figure of adult male), 1876; Booth, Rough Notes, vol. ii, pp. 57-58, 1883; Seebohm, British Birds, vol. i, pp. 426-429, pl. 10, fig. 12 (egg), 1883; Lilford, Coloured Figures, vol. iii, p. 62, pl. 31 (coloured figure of adult male), 1886; Saunders, Manual of British Birds, 2nd Ed., pp. 71-72 (woodcut), 1897.
Adult Male in Spring.— The upper parts generally are greenish yellow, slightly more greyish on the back but more yellow on the rump and upper tail-coverts. The superciliary stripe is bright yellow, lores and upper ear-coverts grey forming a dark streak through the eye, sides of the head and neck olive yellow becoming pure light yellow on the throat and crop, and the rest of the underparts pure white, the flanks being washed with a faint olive yellow. The wings are rather dark greyish brown, the outer edges of the innermost secondaries being broadly edged with light greyish yellow, while the rest of the flight feathers are narrowly edged with the same colour as the back. The secondary coverts are broadly edged with
