TURDIDAZ—ROCK THRUSHES. 9 
brown as in adult females, and in females it is hardly percep- 
tible. 
Distribution: Summer visitant to British Islands and 
mountainous regions of temperate Europe, wintering in North- 
ern and Central Africa and Asia Minor. 
Habitat : Elevated, rocky localities. 
Genus MONTICOLA. 
ROCK-T ARUSE. 
Monticola saxatilis (Zzzz.) 
Adult Male: Joreparts above, bluish-grey ; lower back 
white ; scapulars brownish-black ; wings dark-brown, coverts 
and secondaries tipped with pale buff; ¢az/-feathers chestnut- 
brown, the central ones darker; beneath, pale chestnut, 
except throat, which is grey; bill black; legs and feet deep 
reddish-brown. Length 8 inches; culmen 0'7; wing 4°75; 
taula75 ; tarsus 1-1. 
Adult Female: Above, dull brown, marked with whitish, 
and brown on back; tail paler than in male; throat and 
sides of neck, white, mottled with brown; feathers of rest of 
under-parts white, with reddish tinge, and marked with fine 
transverse lines. 
Young in first plumage: Very like young in autumn, 
but are rather more conspicuously spotted. 
Young (Autumn): Feathers above, more or less dark 
ashy-brown with broad margins of fulvous-white ; wings dark 
brown, conspicuously margined with fulvous-white ; beneath, 
orange-rufous, with a narrow, irregular bar of brown at tip of 
each feather ; bill and feet horn-brown. 
Distribution : Summer visitant to Southern and South- 
eastern Europe, appearing in Northern Africa on migration, 
and wintering in South-eastern Africa. 
Habitat: High, rocky ground, usually at greater elevation 
than AZ. cyanus. 
BLUE ROCK-THRUSH. 
Monticola cyanus (Lzvz.) 
: Adult Male (Summer): Entire plumage blush-slate 
