EGGS OF NORTH AMERICAN BIRDS. I49 



in the mountaiuous parts of the Western United States, from 

 the Rocky Mountains to the Sierra Nevada, in June. 



739. Siberian Chickadee, Icarus cinctus obtectus. Ecrsrs, 

 undescribed. Breeds in Northern Alaska and Eastern Siberia, 



740. HuDsoNiAN Chickadee, Parus hudsonicus. Eggs, 6 

 to 10, oval or spherical, white, finely spotted with reddish 

 brown ; .50 -j- .60 to .55 -|- .66. Nests placed in holes, com- 

 posed of hair, feathers, etc. Breeds in Northern North 

 America, from Northern New England, Northern New York, 

 Northern Michigan, northward in May. 



740a. KowAK Chickadee, Parus hudso7iicus sto?ieyi. Eggs, 

 unknown. Breeds in the valley of the Kowak River, North- 

 westei-n Alaska. Described by Ridgway in " Manual of North 

 American Birds," 1887, p. 591. 



741. Chestnut-backed Chickadee, Parus iiifescens. Eggs, 

 5 to 7, oval, white, spotted and dotted with reddish ; .48 -|- 

 .58 to .50 -f- .60. Nests placed in holes of ti-ees, composed of 

 soft material. Breeds in the northwest coast region of North 

 America, from the Columbia River northward, in May. 



741a. California Chickadee, Parus rufescens neglectus. 

 Eggs, similar to those of No. 741, and the nesting habits are 

 similar. Breeds in the coast region of the middle and south- 

 ern portions of California. 



742. Wren Tit, Chamcea fasciata. Eggs, 3 or 4, oval, 

 pale bluish green, unsj^otted; .50 -j- .68 to .52 -|- .70. Nests 

 placed in low bushes, composed of twigs, straw, and feathers. 

 Breeds in the coast region of California, in May. 



742a. Pallid Wren Tit, Chamcea fasciata hensJiawi. 

 Eggs, indistinguishable from those of No. 742. Breeds in the 

 interior of California, including the western slope of tiie Sierra 

 Nevada. 



743. Bush Tit, Psaltriparus minimus. Eggs, 7 to 9, oval, 

 white ; .44 -j- -^6 to .46 -{- .58. Nests long, cylindrical, eight 

 inches in length, composed of a cottony vegetable, covered with 



