162 THE SCOTTISH NATURALIST 



April. 



Up to 19th April the weather continued inclement, with 

 frequent falls of hail and snow ; thereafter a great anti- 

 cyclonic system became established over the British Isles 

 and surrounding regions, the temperature rose over Scotland, 

 and light to moderate breezes and dry weather prevailed. 



The first fortnight of April showed little movement, and 

 that of a purely normal character ; a few summer visitors put 

 in an appearance, these being more plentiful in the second 

 week, during which time there were also indications of 

 emigration from our Northern Isles. In the third week 

 there were steady arrivals of Wheatears and a good many 

 summer visitors put in an appearance, some being very late, 

 others quite normal as to time of arrival. In the last week 

 of the month there were large arrivals of summer visitors, 

 and some passage migration. 



May. 



The beginning of May was mild, but from the 6th to the 

 19th, with the wind chiefly from some easterly quarter, there 

 was a return of the cold weather ; thereafter till the end of 

 the month the wind was chiefly south and east, and it 

 was warm. 



In the first and second week there was a very large 

 arrival of summer visitors, much evidence of the departure 

 of winter visitors, and some passage migration. With the 

 exception of a lull from the 8th to the 10th, the movements 

 were continuous throughout this period. The second half 

 of the month showed a steadily lessening stream of the 

 above class of migrants : some uncommon visitors are also 

 recorded in May. 



June. 



The first half of June was fine and warm ; flocking of 

 early nesting-birds is recorded, as also the presence of Wader 

 (Turnstones, etc.), and during the earlier part of the period 

 passage migration was noted. The second half of the 

 month was unsettled and considerably colder, and as might 

 be expected, at this season, little movement is recorded. 



