WOOD WARBLERS 181 



with yellow. Underneath is brilliant lemon- 

 yellow streaked with brown. This is a real yel- 

 low bird, true to name as the Indigo Bird. The 

 female is somewhat paler and the breast-stripes 

 are very faint. They are slightly more than five 

 inches long. They range over the greater part 

 of North America, nest as far north as the 

 Arctic region, wintering in Central and South 

 America. 



Black-throated Blue Warbler. A Warbler I 

 frequently find in second-growth woods, where 

 the underbrush is thick, is the Black-throated 

 Blue. His name describes him sufiiciently to 

 insure his identification, and if there be added 

 a suggestion of the white patch on the wings, 

 the description will be complete. This is a very 

 handsome bird, strikingly different in dress 

 from all other Warblers. 



During the migration I frequently find him 

 about the city parks, but, so far as I have ob- 

 served, they nest in forest seclusion. As you 

 venture into their haunts in June, you will hear 

 a sharp '^ cheep, cheep, ^^ and later, if you are 

 patient, ^'szveeze, szveeze, szveeze,^^ uttered by the 

 male when perched low. 



The nest is usually placed in an evergreen 

 tree not far from the ground. It is made of fine 

 bark and grass, lined with vegetable fibre. The 

 eggs are three to five in number, grayish white 

 with large and small spots of brown. 



With the male the upper parts are slaty blue, 

 the edges of the wings and tail deep blue. There 

 is, as w^e have seen, a distinct white patch on 

 each wing and also on the outer tail feathers. 



