EASTERN BLUE GROSBEAK 75 



Early dates of fall arrival are: California — Yosemite Valley, 

 August 8. Louisiana — New Orleans, August 28. New Jersey — 

 Island Beach, August 25. Florida — Leon County, September 1. 

 Sonora — Guirocoba, October 5. Sinaloa — Milpillas, September 9. 

 Morelos — Atlacomulco, October 30. 



Late dates of fall departure are: California — Yerma, October 1. 

 New Mexico — Mesilla, October 12. South Dakota — Yankton, Sep- 

 tember 20. Nebraska — Chadron, October 11 . Kansas — northeastern 

 Kansas, September 2 (median of 8 years, August 27). Oklahoma — 

 Oklahoma City, October 25. Texas — Sinton, October 16. Iowa — 

 Sioux City, September 19. Missouri — Kansas City, October 15. 

 Arkansas — northwestern Arkansas, September 12. Mississippi — 

 Biloxi, October 29. Massachusetts — North Eastham, October 13. 

 Rhode Island — DrownviUe, October 12. Connecticut — East Haven, 

 October 30. New York — Riis Park, November 1 1 ; Tiana, October 22, 

 New Jersey — Cape May, November 1. Maryland — Talbot County, 

 October 24; Caroline County, October 17 (median of 9 years, October 

 6). District of Columbia — September 20. Virginia — Charlottesville, 

 October 22. North Carolina — Raleigh, September 27 (average of 10 

 years, September 12). South Carolina — November 3. Georgia — 

 Macon, October 20; Athens, October 7. Alabama — Dauphin Island, 

 November 8; Jackson, November 1. Florida — Leon County, October 

 22. 



Egg Dates. — Alabama: 22 records, May 10 to August 2. 



Georgia: 47 records. May 10 to July 27; 25 records. May 23 to 

 June 20. 



Maryland: 12 records. May 5 to August 30; 6 records, June 2 to 

 June 16. 



GUIRACA GAERULEA INTERFUSA Dwight and Griscom 



Western Blue Grosbeak 



Habits 



This southwestern race of the species is described by Dwight and 

 Griscom (1927) as "similar to caerulea but larger and paler, the blue of 

 the male less purplish (dark diva, or grayish violaceous blue), the 

 anterior wing-band a paler chestnut, the other wing-band still paler 

 and contrasting, both broader, and the winter veiling heavier. Like 

 salicaria in color but larger, especially the bill. * * * Females and 

 young males larger and paler than caerulea." 



The 1957 edition of the A.O.U. Check-List defines its breeding 

 range as from southeastern California, southern Nevada, Utah, and 

 Colorada northeastward to central South Dakota and eastern 



