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changes in the plumage we give, from 

 the " Catalogue of the Birds of the 

 British Museum " the-Key to the 

 Plumage of Motacilla leucopsis. 



a. Forehead like the back, upper 

 surface light ashy or pale olivaceous, 

 least wing coverts like the back, median 

 coverts white with a mesial streak of 

 dark brown, dusky black patch on 

 foreneck ; Yotmg first plumage. 



b. Forehead white, upper surface gray, 

 median wing coverts white, narrow 

 black band on foreneck ; . . . . 



Yoimg first winter. 



0. Forehead white, head black, back 



gray or mottled black, least wing coverts 



black, broad band on foreneck ; . . 



. . Adult, second winter. 



d. Forehead white, upper parts 

 black, also least wing coverts, lower 

 throat black, upper throat white, 

 white on secondaries confined to 

 inner web ; . . . . 



Adult breeding plumage. 



e. Black extending on to chin, base 

 of secondaries white on both webs ; 



. . Adult filial plumage. 



Distrihution, — China generally ; mi- 

 grant in the eastern part of the 

 Yangtse Valley, passing in considerable 

 numbers in spring and fall breeds in 

 the foothills around Mokanshan, and 

 possibly elsewhere in the region. 



Nest and Eggs. — Nests are built in 

 the straw thatched roofs of native 

 houses around the foothills of Mokan- 

 shan. They are frequently seen at the 

 " first resthouse" on the way to Mo- 

 kanshan from San Jao Pu. 



It is a large cup-shaped nest of 

 leaves and grass lined with hair. Eggs 

 are grayish white streaked with brown 

 and gray of various shades. 



