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99. Grey Wagtail. Motacilla boarula hoarula Linnaeus. 



Motacilla sulfhurea. Shelley, p. 127. 



Fairly numerous, in suitable localities, from October to 

 March. 



Length about 7 inches. Crown, nape and back pale blue 

 grey ; rump green ; under parts yellowish buff, more yellow on 

 belly ; tail very long and half white and black. In the spring a 

 black throat is assumed by both sexes. 



100. Yellow-headed WagtaiL Motacilla citreola Pallas. 



Not mentioned by Shelley. 



Occurs but rarely ; all of those known to present writer 

 were young birds in autumn plumage. 



Length about 6 inches. Head canary yellow ; back grey ; 

 under parts like the head ; tail black, with white on outer tail 

 feathers. Young birds grey above, sometimes brownish, , with 

 a grey rump. Under parts white or buffish. white, sometimes 

 slightly washed with yellow. Females somewhat resemble 

 young birds but are rather more brightly coloured and washed 

 on the under parts with yellow. 



101. Blue-headed Yellow Wagtail. Motacilla flava flava 



Linnaeus. 

 Budytes flava. Shelley, p. 128. 

 Very abundant during the spring migration, and again during 

 the autumn passage, when only adult males are distinguishable 

 from the other allied forms. 



Length 6 inches. Crown and nape pale blue grey ; eyestripe 

 white ; ear coverts like the crown, but with a spot of white in 

 centre. Back greenish ; under parts gamboge yellow; outer tail 

 feathers white. Females are duller and often lack the grey on 

 head, which is then greenish. The females and young of all the 

 forms of blue-headed and black-headed wagtails are usually, 

 though not always, very difficult and sometimes impossible to 

 distinguish. 



102. Dombrowsky*s Blue-headed Wagtail. Motacilla flava 



dombrowshyi (Tschusi). 

 Not mentioned by Shelley. 

 Not uncommon during the spring migration. 

 Length 6 inches. In this form the ear coverts are nearly 

 black, and the crown of the head is of a deeper blue than in the 

 preceding form. 



