220 Mr. F. N. Chasen on the [Ibis, 



Haliaetus albicilla. White-tuileJ Engle. 

 A fair proportion of the Eagles seen wore of this species. 

 Most numerous in winter, but seen in spring. 



Hieraaetus fasciatus. Bonelli's Eagle. 



Common on the left bank of the Struma in winter. The 

 light breast, which looks quite yellow at long ranges, is a 

 good field point. I suspect that the "Ospreys" of my 

 sportsman friends were usually examples of this Eagle. 

 I kept a close watch for Ospreys, but was unsuccessful ; but 

 Major Sladen tells me in a letter that he has eggs — taken by 

 an officer — from the hills to the south-east of Lake Doiran. 



Neophron percnoptenis. Egyptian Vulture. 



Flocks consisting of a score or more of these birds were 

 quite common in the summer. The species seemed to be 

 most numerous in the direction of the Serbian frontier, where 

 the state of the country must have been more congenial to 

 their wants than the cleaner area occupied by the British 

 forces. One sultry afternoon in April a flock of these 

 Vultures remained in the air through a thunderstorm. The 

 downpour of hail, which was particularly violent, made no 

 appreciable difference to their easy manoeuvring aloft. 



Gypaetus barbatus. Bearded Vulture. 



Single birds seen on three occasions on the hills at Paprat 

 in November. At close range the wedge-shaped tail is very 

 conspicuous, and a uniform grey appearance serves to dis- 

 tinguish the species afar. The closest investigation of all 

 large llaptores failed to reveal this species on the plain. 



Gyps fulvus. Griffon Vulture. 



Common, but usually seen at a great height over the 

 Struma plain. Bursting shrapnel (anti-aircraft) caused 

 them to mount to an even greater altitude. This species was 

 only once seen under really favourable circumstances. This 

 was in August, when a flock of eight birds descended into 

 the valley at Baisili, attracted by the assembling of a large 



