196 OUR SUMMER MIGRANTS. 



of having a pouch under the chin, from which 

 it ejects the insects in a lump the size of a 

 boy's marble. 



As a general rule, the Swift is not observed 

 in this country before the third week in May, 

 and is seldom seen after the third week in 

 August. It is found throughout the mainland 

 of the British Islands, and breeds also in Mull 

 and lona, but not in Orkney or Shetland, nor in 

 the Outer Hebrides. It does not travel quite 

 so far north as either the Chimney Swallow or 

 the Martin, but the late Mr. Wolley saw it on 

 the Faroes, 1 and Mr. Wheelwright frequently 

 observed it hawking over the high fells at 

 Quickjock, Lapland, during the summer. 2 



If we look for the bird during the months 

 that it is absent from Great Britain, we find 

 that it is very abundant at the Cape of Good 

 Hope in winter, arriving about September 5, and 

 departing northwards in April. It is seen in 



1 " Contributions to Ornithology," 1850, p. 109. It is not 

 included by Herr Miiller in his " Bird Fauna of the Faroes." 



2 "A Spring and Summer in Lapland," p. 281. 



