AZURE WARBLER. 



THIS elegant species has the beak black, with 

 the base of the under mandible reddish : eyelids 

 white ; from the beak to the hind head a stripe of 

 black : the head and upper parts of the plumage 

 blue-grey : wings grey-brown ; the quills edged 

 with whitish within, and some of them with the 

 outer edges and tips of that colour: the under 

 parts of the body white : the eight middle tail- 

 feathers dusky blue, the outer ones tipped with 

 white. The female has the plumage in general 

 ash-coloured, the head and upper parts deepest : 

 the quills are edged with whitish : the outer tail- 

 feather is nearly all white, the next so towards 

 the tip, and the third slightly tipped with that 

 colour. This bird is migratory, arriving in Pen- 

 sylvania in the spring, and retiring in the au- 

 tumn : its nest is very singularly constructed : it 

 is cylindrical, and is placed between two branches 

 of a tree; the top is open; its outside is com- 

 posed of moss and lichen neatly put together, and 

 the lining consists of horse-hair. 



AZURE WARBLER. 

 (Sylvia azurea.) 



SY. ccerulea subtus alba, lateribus pectoris cceruleo maculatis. 

 Blue Warbler, beneath white, with the sides of the breast spotted 



with blue. 



Sylvia caerulea. Wils. Amer. Orn. 2. 141. 

 Caerulean Warbler. Wils. Amer. Orn. 2. I4l.jp/. xvu.f. 5. 



