Henry Eliot Howard, The British Warblers A History with Problems of Their Lives… (1908)
“ The flight-feathers are ashy brown edged with greyish green, the innermost secondaries being tipped with white. The posterior edge of the primaries is brownish white. The under parts generally are whitish, but the throat is of a more whitish grey colour tinged with yellow, which colour continues down the breast, where it forms indistinct longitudinal stripes. The abdomen is white, the flanks tinged with greenish yellow, and the under tail-coverts whitish grey washed with light yellowish green. The under side of the tail and wing is greyish lavender, the flight-feathers being edged with white. ”
