EGGS OF NORTH AMERICAN BIRDS. 153 



756a. Willow Thrush, Tardus fuscescens salicicolus. 

 Eggs, indistinguishable from those of No, 756. Breeds in the 

 Rocky Mountain region of the United States, east to Dakota. 



757. Gray-cheeked Thrush, Tardus alicioe. Eggs, 4, 

 oval, bright greenish blue, spotted and blotched with reddish 

 and yellowish brown ; .62 -}- -88 to .64 -j- .92. Nests usually 

 placed on the limbs of trees, but occasionally on the ground, 

 composed of grass, leaves, and strips of bark, occasionally 

 with a mud base. Breeds in Eastern North America, north of 

 the United States, in May. 



757«. Bickxell's Thrush, Turdus alicice bicJcnelli. Eggs, 

 indistinguishable from those of No. 757. Breeds in the moun- 

 tainous parts of the Northeastern States, Catskill, White 

 Mountains, etc., in June. 



758. Russet-backed Thrush, Turdus ustalatus. Eggs, 

 pale bluish green, spotted and blotched with reddish brown 

 and lilac ; .65 -|- .90 to .69 -\- .94. Nests placed in trees, com- 

 posed of twigs, leaves, grass, and bark, etc. Breeds in the 

 Pacific coast of North America, from Alaska to California, in 

 May. 



758«. Olive-backed Thrush, Turdus ustalatus swainsonii. 

 Eggs, indistinguishable from those of No. 758, and the nests 

 and nesting habits are similar. Breeds in Eastern North 

 America, from Northern New England northward, in June. 



759. Dwarf Hermit Thrush, Turdas aonalaschkm. Eggs, 

 indistinguishable from those of No. 756, and the nests and 

 nesting habits are similar. Breeds in the Pacific coast region, 

 from California to Alaska. 



759a. Audubon's Hermit Thrush, Tardus aonalaschkm 

 aiiduhoni. Eggs, indistinguishable from tliose of No. 756, and 

 the nests are similar. Breeds in the Rocky Mountain region, 

 from the northern border of the United States, southward. 



7595. Hermit Thrush, Tardus aonalaschkoe, pallasii. 

 Eggs, indistinguishable from those of No. 756, and the nests 

 and nesting habits are similar. Breeds in Eastern North 



