"It is a light structure, resembling that of the Chestnut-sided Warbler, composed of twigs, weed-stalks 

 and grasses, lined either with horse-hair or fine rootlets." 



EGGS: 



The complement of eggs is four or five. Davie describes them as follows : " Creamy white, blotched 

 sparingly over with large spots of lilac and umber, and wreathed about the larger end with brown, 

 clouded with lilac spots and blotches ; usually four and sometimes five, and measure from .62 to .65 by 

 .46 to .50." Dr. Brewer, in "North American Birds," writes: "The eggs of this Warbler are, in shape, 

 a rounded oval, one end being but slightly more pointed than the other. They measure .62 of an inch 

 in length, and .49 in breadth. Their ground-color is a light ashen hue or a dull white, and this is 

 more or less sprinkled with fine dots and blotches of a light brown* For the most part, these are grouped 

 in a ring about the larger end." Eggs in my possession average about .49 x .65. Some are pretty 

 heavily blotched and speckled, others less so, while still others are entirely and uniformly speckled. 

 The color of surface-marks is nearly brown-madder in tint, never very decided in tone; deep shell-marks 

 aj)pear gray. Some eggs look as if most of the color had been washed off, or had been applied very wet 

 and had soaked in. 



DIFFERENTIAL POINTS : 

 See table. 



REMARKS : 



Plate LXVIII, Fig. 2, represents three eggs of the common size and markings of the Black and 

 Yellow Warbler. I am satisfied these Warblers regularly build about Circleville, but I have never 

 found their nest. I have, however, seen a pair of old birds feeding their young. So far as I am 

 aware, this nest has yet to be discovered in Ohio. There are a number of birds which regularly or 

 irregularly breed in the State, that I have searched for in vain. Some of these, like the Cerulean 

 Warbler, are common, but there are so many obstacles in the way of finding their homes, that search 

 is almost useless unless favored by accident. 



292 



