PERCHING BIRDS 



474g. STREAKED HORNED LARK. Ostocoris alpestris strigata. 



Range. Northwestern United States (Washington, Oregon and northern Cali- 

 fornia). 



Similar to the last, but with the back broadly streaked with black, the ruddy 

 less intense and the underparts tinged with yellowish. 



474h. SCORCHED HORNED LARK. Otacoris alpestris adusta. 



Range. Western Mexico, north in summer to southern Arizona. 



This variety has the back and nape nearly a uniform pinkish ruddy with but 

 little streaking. 



4741. DUSKY HORNED LARK. Otocoris alpestris merrilli. 



Range. Northwestern United States and southern British Columbia, winter- 

 ing south to central California. 



Similar to praticola but slightly darker above. 



474j. SONORA HORNED LARK. Otocoris alpestris pallida. 

 Range. Gulf coast of northern Lower California. 

 The upperparts of this variety are very pale pinkish brown. 



474k. HOYT'S HORNED LARK. Otocoris alpestris hoyti. 



Range. Interior of British America, west of Hudson Bay and east of Alaska, 

 south in winter in the interior of the United States to Kansas. 



Much larger than the last; equal in size and similar to articola but with the 

 throat yellowish and the upperparts darker and brighter. 



4741. MONTEZUMA HORNED LARK. Otocoris alpestris occidentalis. 



Range. Western New Mexico and eastern Arizona, south in winter to north- 

 ern Mexico. 



This variety has the upperparts pale brownish and not streaked; throat and 

 forehead yellowish. 



474m. ISLAND HORNED LARK. Otocoris alpestris insularis. 



Range. Santa Barbara Islands, California. 



Similar to strigata but darker. With the exception of the three large varie- 

 ties of Horned Larks found north of our borders, neither the eggs nor, in most 

 cases, the birds can be identified without the precise location where they were 

 taken. 



299 



