202 WOOD WARBLER.
Their moult docs not take place during their stay in this country.
Mr. Macgillivray says, ' I have not observed any other variations
than those dependant upon the wearing of the plumage, and the fading
of the tints. The above descriptions are from individuals in perfect
plumage, not in the smallest degree worn, obtained in May. Many
individuals arrive in that state, and must therefore have moulted in
their winter residence, while in others the quills and tail are more
or less worn. Towards the end of summer, the colour of the upper
parts of the male is yellowish brown, tinged with grey; the wings and
tail, wood-brown; the lower parts nearly pure white. By the middle
of June the female is of ¡1 nearly uniform greyish brown above, and
the yellow on the fore neck is almost obliterated. The new plumage
is completed by the end of September.'
