74 EGGS OF NORTH AMERICAN BIRDS. 



Breeds in the Rocky Mountain region of the UnitcHi States, 

 south into New Mexico. 



402. Yellow-bellikd Sap-sucker, SphyropicKs var'ms. 

 Eggs, 4 to 7, rather oval ; .60 -j- -75 to .75 -j- .85. Breeds in 

 North America, from Northern New England northward, in 

 May. 



402a. Red-naped Sap-sucker, Sphyrapicus varius nuchalis. 

 Eggs, similar in form and size to those of No. 402. Breeds in 

 the Rocky Mountain region of the United States, south into 

 Mexico. 



403. Red-breasted Sap-sucker, Sphyi'apicus ruber. Eggs, 

 indistinguishable from those of No. 402. Breeds in the 

 Pacific coast region of the United States, in May. 



404. Williamson's Sap- sucker, /Sphj/rajncus thyroideus. 

 Eggs, quite similar to those of No. 402, but arc a little larger ; 

 .66 -|- .96. Breeds in the Rocky Mountain region of the 

 United States, next to the Pacific coast, in May. 



405. PiLEATED Woodpecker, CeophlvAus pileatus. Eggs, 3 

 or 4, rounded oval ; .90 -|- 1.40 to 1.04 -f- 1.50. Breeds in 

 the wilder, heavily wooded sections of North America, but 

 does not occur in the settled districts. Eggs deposited in 

 April, in the south, later farther north. 



406. Red-headed Woodpkcker, Melanerpes erythrocepha- 

 his. Eggs, 4 or 5, varying from elliptical to oval ; .75 -|- .90 to 

 .80 -}- 1.00. Breeds in the United States, east of the Rocky 

 Mountains, but rare in New England. Nests in May. 



407. California Woodpecker, Jfelanerpes formicivorus 

 bairdi. Eggs, varying from oval to elliptical ; .75 -j- .90 to 

 .80 -|- 1.00. Breeds in the Pacific coast region of the United 

 States, east into Arizona and south into Mexico, in May. 



407a. Narrow-fronted Woodpecker, Melanerpes formici- 

 vorus angustifrons. Eggs, probably ip.distinguishable from 

 those of No. 407. Breeds in Lower California. 



408. Lewis's Woodpecker, Melanerpes torquatns. Eggs, 

 4 to 6, varying from elliptical to oval or spherical ; .92 -j- 1.10 



