THE WILLOW-WARBLERS. 
215 
pale yellow at the tips, forming a second wing-band ; primary- 
coverts and quills dusky brown, externally greenish-yellow, 
these margins not reaching to the base of the secondaries, so 
that there appears a dusky patch on the wing formed by the 
primary-coverts, and a second one at the base of the 
secondaries, caused by the absence of yellow maigins , the 
inner secondaries more broadly edged with white ; tail-feathers 
dusky brown, edged with yellowish-green, and with a narrow 
pale fringe along the tip of the feathers ; sides of face dusky 
olive, with a dusky line through the eye and along the upper 
ed-re of the ear-coverts ; eyelid and a distinct eye-stripe pale 
yellow ; under surface of body ashy-whitish, clearer on the 
abdomen, with streaks of yellow on the breast ; the flanks 
greenish, washed with yellow ; under wing-coverts white, 
washed with yellow; axillaries and edge of wing bright sul- 
phur-yellow ; quills dusky below, whitish along the inner web ; 
bill dark brown, paler at the base of the lower mandible; 
feet and claws brown ; iris hazel. Total length, 3-8 inches ; 
culmen, o'4; wing, 2'i ; tail, i'4 ? > tarsus, o 7. 
Adult Female. — Similar to the male, dotal length, 3 5 
inches; wing, 2’iS. 
winter Plumage.- Decidedly more olive than in the summer 
time, when the plumage gets bleached and worn, and presents 
an ashy appearance. The central streak on the crown becomes 
whiter and more distinct, as does also the eyebrow, hut the 
double wing-bar is never completely abraded or lost. 
Range in Great Britain. — The present species has occurred oc- 
casionally in the British Islands, some seven specimens having 
now been met with since the first was procured by the late Mr. 
John Hancock, in Northumberland, on the 26th oi September, 
1838. Since that date the species has been procured in Lin- 
colnshire, Gloucestershire, the Scilly Islands, in the Shetlands, 
and even in County Kerry in Ireland. 
Range outside the British Islands. — This is a Siberian species 
which wanders westward in autumn, when it has been met 
with near Berlin, Vienna, and Leyden, and has occurred at 
least sixty times in Heligoland, over which island it appears to 
pass nearly every autumn on migration, between the last week 
