25G BIRDS OF EUROPE AND NORTH AFRICA 



triangular black mark ; crown and chest pinkish grey, across 

 the latter a black band ; lower breast and abdomen black ; middle 

 tail feathers only slightly lengthened. Iris dark brown. Bill 

 blue grey. Feet dull greyish blue. $ Above sandy, head and 

 neck spotted, back and wing coverts barred dark brown ; beneath, 

 throat yellow, merging into black on lower throat, between throat 

 and breast a narrow grey band, breast buff with black spots 

 and across lower breast a black band, abdomen black. Wing 

 ^ ? 228-244. Tarsus 30-35. Bill 11-12 (H.). 



Residcjit. — Spain and Portugal, E. Canaries (Fuerteventura), 

 C. and S. Morocco, Algeria south of Atlas, C. and S. Tunisia, 

 Tripoli, S. Russia (Volga Valley, and north of Astrakhan Govt.) ; 

 also in W. Asia. 



Pterocles alchata alchata (L.). Pin-tailed Sand 

 Grouse. 



$ summer. Upper parts greyish green with large yellow 

 spots ; crown greyish, face orange red, wing coverts chestnut 

 with yellow margins ; beneath, throat black, foreneck yellow 

 buff, breast dark reddish buff between two black bars, abdomen 

 white. Bill greyish brown. Feet and naked skin round eye 

 bluish grey. Wing ^ $ 194-215. Tarsus 27-28. Bill lo-ii. 

 Middle tail feathers 60-80 m.m. longer than next pair. $ Upper 

 parts yellowish barred with black and lavender, chin and throat 

 white. ^ in autumn resembles $ but has no lavender bars. 

 Young : above buff with V-shaped brown markings on upper 

 parts. 



Resident. — Spain, Portugal, S. France. 



P. alchata caudacutus (Gmelin). Colours lighter and duller, 

 margins of wing coverts white. 



Resident. — N. Africa, from C. Morocco south of Atlas, through 

 Algeria, Tunisia, and Tripoli to Cyrenaica ; also in W. Asia to 

 India. Has occurred in Italy, Sicily, Malta. 



Pterocles senegallus (L.). 



(^ Isabelline ; wing covets and axillaries purplish brown with 

 buff tips ; supercilium and neck grey, centre of abdomen black. 

 Bill bluish grey, with black tip. Feet bluish white. Skin round 

 eye yellowish. Wing (^ $ 194-210. Tarsus 23-25. Bill 11-13. 



