EGGS OF NORTH AMERICAN BIRDS. 105 



the eastern portion of North America, from New England 

 north to Labrador and Hudson's Bay Territory, in June. 



542J. Western Savanna Sparrow, Ammodramus sa?id- 

 wichensis alaudimis. Eggs, similar to those of No. 542, but 

 the spots are usually larger and darker. Nests and nesting 

 habits similar to those of the eastern species. Breeds in 

 the western section of North America, from the plains to the 

 Pacific coast north to the Arctic coast, in June, 



542c. Bryant's Marsh Sparrow, Ammodramus sandwich- 

 ensis bryanti. Eggs, indistinguishable from those of No. 542, 

 and the nests and nesting habits are similar. Nos. 542, 542«, 

 and 542c are usually known by the suffusion of the spottings 

 that nearly cover the surface of the eggs. Breeds on the salt 

 marshes about San Francisco Bay, in May. 



543. Belding's Marsh Sparrow, Am.inodram,us heldingi. 

 Eggs, unknown. Breeds on the salt marshes of the Pacific 

 coast, from Santa Cruz south to Todos Santos Island, Lower 

 California. 



544. Large-billed Sparrow, Ammodramus rostratus. 

 Eggs, unknown. Breeds on the coast of California. 



544a. St. Lucas Sparrow, Am,modramAis rostratus gutta- 

 tus. Eggs, unknown. Breeds in Lower Califoi'nia. 



545. Baird's Sparrow, Ammodramus hairdii. Eggs, 4 or 

 5, long oval, pale green, spotted and blotched with brown and 

 lilac of varying shades ; .54 -(- .71 to .56 -1- .74. Nests placed 

 on the ground, composed of bark and grass. Breeds in the 

 interior of North America from the plains of the Red River 

 and Saskatchewan southward, in May and June. 



546. Grasshopper Sparrow, Ammodra7)%us passerinus. 

 Eggs, 4 or 5, oval or elliptical, pure white, spotted and 

 blotched, usually more thickly about the larger end, where 

 they often form a ring, with purple, umber, and brown ; .58 -f- 

 .75 to .60 -|~ .78. The pure white color is characteristic of 

 this group. Nests placed on the ground, composed of dried 

 grasses, lined with hair. Breeds in Eastern United States 



