EGGS OF NORTH AMERICAN BIRDS. 151 



are usually placed at an elevation above the ground, but some- 

 times on it. 



747. Kennicott's Willow Warbler, PhyUopseustes bore- 

 alis. Eggs, undescribed, but are probably similar to those of 

 the closely allied Willow Wren of Europe, which are 5, pink- 

 ish white, distinctly spotted and blotched with reddish brown ; 

 .65 -\- ,50. Nests placed on tiie ground and domed. Breeds 

 in Northeastern Asia and Alaska. 



748. Golden-crowned Kinglet, Ttegulus satrapa. Eggs, 

 8 to 10, oval, creamy white, minutely and somewhat obscurely 

 dotted with slaty and brown ; .47 -f .39 to .41 -f- .52. Nests 

 placed in trees, composed of soft moss arranged in a globular 

 form, with the entrance on the top, and lined with feathers. 

 Breeds in North America, in the northern and elevated parts 

 of the United States, northward, in June. 



748a. Western Golden-crowned Kinglet, Regulus 

 satrapa olivaceus. Eggs, probably similar to those of No. 748. 

 Breeds in the Pacific coast region, from California northward. 



749. Ruby-crowned Kinglet, Megulus calendula. Eggs, 

 5 to 7, rounded oval, grayish white, faintly spotted with light 

 brown, rather more thickly on the larger end ; .42 -|- .54 to 

 .43 -j- .58. Nests semi-pensile and purse-shaped, composed of 

 bark and green moss, lined with feathers and hair. Breeds in 

 North America, generally north of the United States, but 

 south of this in the more elevated portions, in June. 



750. Dusky Kinglet, Regulus obscurus. Eggs, unknown. 

 Breeds on Guadalupe Island, Lower California. 



751. Blue-gray Gnatcatcher, PoUoptila cmrulea. Eggs, 

 4 to 6, oval, bluish white, spotted and blotched irregularly with 

 reddish brown and lilac ; .43 -j- .56 to .46 -j- .60. Nests pen- 

 sile, purse-shaped, composed of weed stalks, smoothly covered 

 with lichens, and lined with feathers. Breeds in the southern 

 and middle portions of the United States, in May. 



752. Plumbeous Gnatcatcher, PoUoptila plumhea. Eggs, 

 4 to 6, oval, pale greenish blue, spotted with reddish brown ; 



