SWALLOWS 



133 



The Eock Martin {Ptyonoprocne fuUgula) is a brown bird 

 with the taU-feathers, excepting the centre and two outer 

 ones, adorned by a circular white spot on the inner web. 

 Length, 5| inches. 



Fig. 70. — Nest (top one) of White-throated Swallow. 



It is not found north of the Transvaal, nor in German 

 South- West Africa, but is otherwise fairly evenly distributed. 

 It builds an open half -cup-like nest against a rock or under 

 the eave of a house, of mud pellets, and lays three or 



