The Mlgradoi of North American Sparrows 177 



tember 20, 1901; and in northern Florida, on the average, October 7, the 

 earliest, September 27. 



The last one noted at Eubank, Ky., was on September 26, 1889; Monteer, 

 Mo., September 27, 1909; near Mt. Carmel, 111., October 28, 1882; New Har- 

 mony, Ind., September 24, 1902; Weaverville, N. C, November i, 1890. 



BOTTERI'S SPARROW 



This is a Mexican species, scarcely, if at all, migratory. It has a wide 

 range in Mexico, but barely reaches the United States in the Rio Grande 

 Valley of extreme southern Texas. It has also been recorded from a few 

 localities in southern Arizona, north to the Santa Catalina Mountains. 



CASSIN'S SPARROW 



Wintering in Mexico, Cassin's Sparrow migrates early in the season into 

 the contiguous parts of the United States. It was noted at Brownsville, Texas, 

 as early as February i, 1910; while the average date of arrival at San Antonio 

 is March 23, the earliest, February 18, 1897. Migrants enter southern Arizona 

 soon after the middle of March, and the species breeds north to southeastern 

 Nevada, southern Colorado, and southwestern Kansas. It was still common at 

 Carlsbad, N. M., September 12, 1901, and remained at Laredo, Texas, until 

 November 12, 1885. 



RUFOUS-WINGED SPARROW 



Southeastern Arizona, north to the Santa Catalina Mountains, is the only 

 part of the United States where the Rufous-winged Sparrow occurs. The 

 main part of the range is in northern Mexico; but the few individuals that 

 occur in Arizona remain there the entire year, and the nesting season is so 

 extended that fresh eggs have been noted from the middle of May to the 

 second week in September. 



RUFOUS-CROWNED SPARROW 



This Sparrow has been separated into four forms, or subspecies. The 

 earliest-known form, now called the Rufous-crowned Sparrow (Aimophila 

 ruficeps ruficeps), occurs in California west of the Sierra Nevada, and north to 

 Marin and Placer Counties; it ranges south to the San Pedro Martir Mountains 

 of Lower California. While not strictly a non-migratory species, yet some 

 individuals remain through the winter at the extreme northern limit of the 

 summer home, and prevent the obtaining of any exact data on the movements 

 of the migrant birds. Apparently most of the short migratory flight occurs 

 in March. 



Scott's Sparrow (Aimophila r. scotti) ranges from northern Mexico north to 

 southern Arizona, northern New Mexico, and southwestern Texas. It is not 



