362 INSECTI VOILE. 



so that the bird can wheel in the air ; and the sort of rota- 

 tory motion that it has, and the oblique positions in which it 

 can be exerted, enable the bird to change into an echellon 

 motion, the result of which is forward, sideways, and upward 

 or downward, all at the same time. The straight-forward 

 flight is rather rapid, and all the motions of the bird are 

 graceful. 



THE BLUSH REDSTART (CuTTUCa Tethys), 



Has occurred as a British straggler. It is much more rare 

 even on the continent, than the common red-start. Its 

 colours are ash and grey above, cheeks, throat, and breast 

 black, flanks dark ash, middle of the belly white, vent and 

 under coverts of the tail bright red. 



THE WHITE-THROAT WARBLER (CuTTUCa 



The white-throat is the best known, the most numerous, 

 and the most generally distributed, of all the warblers ; and 

 though its stave is somewhat brief, it is so unsparing in its 

 repetition, that it gives abundant quantity of no despicable 

 song. The dwelling of the white-throat is comparatively 

 humble : a hedge, a solitary bush, or, failing that, a tuft of 

 nettles, or of any other rank herbaceous plants. Still, it is a 

 bird of the rich districts, and not found in the wild and 

 elevated moors, though it migrates farther to the north than 

 any of the other warblers. 



Its plumage is as sober as its dwelling is humble. The 

 bill, which is not so enlarged at the base as that of the red- 

 start, is dusky above and at the point, and light on the under 

 part. The feet are pale brown, and the irides yellowish- 

 brown. The upper part is a mixture of brown, yellow, and 

 grey, the grey more conspicuous on the sides of the head and 

 neck. The lesser wing coverts are pale brown, the larger 

 and the quills and tail feathers dusky brown, the coverts 



