423. Acanthopneuste plumbeitarsus.
Phylloscopus plumbeitarsus, Swinh. Ibis, 1861, p. 330; Hume &; Dav. S. F. vi, p. 355 ; Brooks, S. F. vii, p. 508 ; Hume, Cat. no. 558 bis; Brooks, S. F. viii, p. 385; Bingham, S. F. ix, p. 187 ; Seebohm, Cat. B. M. v, p. 45; Oates, 8. F. x, p. 222; id. B. B. i, p. 79. Phylloscopus seebohmi, Hume, S. F. v, p. 335 (1877); Hume & Dav. S. F. vi, p. 356; Hume, Cat. no. 558 ter. Phylloscopus viridanus, Blyth, apud Hume & Dav. S. F. vi, p. 356 ; Hume, S. F. xi, p. 219.
Coloration. So similar to P. viridanus, of which this is the eastern form, as to require no separate description. P. plumbeitarsus differs in having the median wing-coverts, as well as the greater coverts, tipped with yellowish white, thus having two wing-bars. When the upper bar is abraded, it is difficult to separate the two species.
Upper mandible brown, lower clear yellow ; iris brown; mouth yellow ; legs pale plumbeous-brown, the toes tinged with yellow ; claws pale horn-colour.
Of the same dimensions as A. viridanus.
The Phylloscopus seebohmi of Hume would now appear to have been this species in spring plumage, and not A. viridanus, which does not occur in Burma.
Distribution. A common winter migrant to Southern Pegu, and the northern portion of Tenasserim down to Mergui, from the middle of September to the end of April. It appears to summer in Turkestan and southern Siberia.