556 FIELD MUSEUM OF NATURAL HISTORY ZOOLOGY, VOL. IX. 



Red-winged Blackbird (male). 



The Red-winged Blackbird 

 is an abundant summer resi- 

 dent in Illinois and Wisconsin, 

 frequenting swampy places 

 and breeding throughout both 

 states. It arrives from the 

 south in March and leaves in 

 October. The note is a loud 

 chuck, while its song is a medley 

 of metallic vocal sounds beyond 

 Female " description. 



The nest is of dry grass, built in reeds or on branches of bushes 

 and low trees bordering marshes or ponds. The eggs are from 3 to 

 5 in number, pale blue or grayish marked and scrawled with black, 

 dark brown, and purplish gray. They measure about .98 x .70 

 inches. 



The Field Museum collection contains a number of sets of eggs of 

 this species taken near Joliet, Illinois, between May 21 and June 14. 



226a. Agelaius phceniceus arctolegus OBERHOLSER. 

 ARCTIC RED-WINGED BLACKBIRD. 



Distr. : " Montana, North Dakota, Minnesota, and northern Michi- 

 gan; north to Kewatin, Athabaska, and Mackenzie; in migration south 

 to Colorado, Texas, Illinois, and probably Ohio." (Oberholser, 

 Auk, 1907, p. 332.) 



