REPORT ON SCOTTISH ORNITHOLOGY IN I919 115 



increased and the departure of a good many winter visitors 



is noted. 



May. 



With a change of wind to the south and south-east on 



5th May a very large arrival of summer visitors took place, 



and passage migrants are noted in numbers, while the late 



winter visitors were betaking themselves to their northern 



nesting grounds. The height of the movement was on the 



loth and it continued till the i6th, after which we iind 



small numbers only up to the end of the month. 



/line. 



The weather throughout June showed no unusual features 



except a cold snap at the end of the month. In the first half 



of the month there were a few late arrivals and some passage 



migration. One or two interesting occurrences are recorded 



in the second half, and after the 26th flocking and returns to 



the shore are noted. 



July. 



With unusually cold weather there was very little 



migration in the first half of July ; almost all that is noted 



are returns to the shore from inland breeding places. In the 



second half the weather improved somewhat, and there were 



some departures of Swifts and movement among Duck and 



Wader. 



August. 



Up to 24th August the winds were chiefly from some 

 southerly or westerly quarter and warm weather prevailed, 

 thereafter the wind was largely from the north and west and 

 the temperature was below the normal. In the first half of 

 the month there is evidence of a good deal of movement 

 among our own breeding birds. Wader were arriving from 

 overseas and Swifts were leaving the country. The move- 

 ments intensified in the second half of the month, and there 

 is evidence of a little passage migration. 



September. 

 The chief characteristic of September from a meteoro- 

 logical standpoint is the entire absence of east wind in our 

 area ; as would be expected, therefore, there was no rush 



