REPORT ON SCOTTISH ORNITHOLOGY IN 1917 163 



July. 



During the first fortnight of July the wind was variable 

 and the temperature moderate ; practically no movement 

 took place, flocks of Turnstones were the principal item of 

 interest in the records sent. In the second half, with a rise 

 in temperature and variable winds, we have the beginning 

 of the emigration of our summer visitors, immigration of 

 Wader from overseas, flocking of local nesting-birds and 

 movements of Duck. 



August. 



August was a warm month ; there was a good deal of 

 thunder and rain between the 12th and 1 8th, and the wind 

 was chiefly between south and east up to the 26th, after 

 which it was variable, the temperature fell slightly, and it 

 was very wet. Throughout the month there was a good 

 deal of Wader movement and departure of summer visitors ; 

 these movements became more pronounced as the month 

 advanced, and after 25th August we find a few passage 

 migrants on their way through the country. 



September. 



Throughout September the wind was invariably from 

 some westerly quarter, and the temperature was moderate. 

 During the first fortnight there were a good many departures 

 of our summer visitors, a little passage migration, and some 

 Duck and Wader movement. The same movement con- 

 tinued till the end of the month, and in the last half there 

 were, in addition, arrivals of winter visitors (especially 

 Geese about 28th September), and a good many last 

 records of summer birds. The migrations were quite steady, 

 there being no rush of any kind. 



October. 



The westerly type continued throughout October, there 

 being no spell of east wind during the whole period; the 

 temperature was below the normal, and the records of 

 movement are the smallest we have ever had for this month. 

 In the first half there were departures of what remained of 



