By Upland Streams. 1 7 



hill streams of the Rocky Mountains and the 

 Andes. 



Our British Dipper, as probably most readers at 

 all familiar with the bird may be aware, is one of 

 the most sedentary of our indigenous species. Both 

 here and in those parts of continental Europe which 

 the typical species frequents, as well as the slightly 

 different northern form from Scandinavia, the birds 

 keep closely to their native streams summer and 

 winter alike, only wandering from them in the very 

 exceptional event of the torrents becoming frost- 

 bound. Such a peculiarity has resulted in the estab- 

 lishment by variation and isolation of an almost end- 

 less number of local races or sub-specific forms. To 

 a slight extent this may be remarked even in our 

 own islands, birds from various localities exhibiting 

 differences of coloration, but when we come to 

 review the Dippers of the entire Palaearctic region 

 the amount of variation amongst them is much more 

 pronounced. The scope of the present little volume 

 forbids a scientific revision of the genus Cinclus; but 

 a glimpse of the sprightly little brown and white 

 bird bobbing up and down like a fleck of foam 

 amidst the whirling waters of a northern trout 

 stream suggests a passing' allusion to these interesting 

 facts. 



The English local names of the Dipper are not 

 without interest. It is somewhat curious to find 



( M 018 ) B 



