80 U.S. NATIONAL MUSEUM BULLETIN 23 3 



Ruby-crowned Kinglet 



Regulus calendula (Linnaeus) 



The ruby-crowned kinglet is rarely victimized; only six records, 

 five for the nominate race of the kinglet and one for the race R. c. 

 cineraceus, are known to me. Davie (1889, p. 428) reported a nest 

 with 9 eggs of the owner and 1 of the cowbird taken at Lennoxville, 

 Quebec, May 15, 1882, by Montague Chamberlain; Terrill, also in 

 southern Quebec, found two nests with cowbird eggs in them; Holt 

 (1942, p. 589) found a ruby-crowned kinglet feeding a very recently 

 fledged cowbird at Scarboro Beach, Maine, July 22, 1941 ; A. D. 

 Henderson informed me that he once found a parasitized nest near 

 Belvedere, Alberta. In the collections of the Western Foundation 

 of Vertebrate Zoology there is a set of 7 eggs of the western race 

 of this kinglet with 1 of the brown-headed cowbird, collected in 

 Mono County, California, June 23, 1948. This and the Alberta 

 record involve the northwestern race of the parasite, M.a. artemisiae; 

 the others are all of the nominate subspecies. 



Sprague's Pipit 

 Anthus spragueii (Audubon) 



Sprague's pipit has been recorded as a victim of the northwestern 

 race of the brown-headed cowbird a single time. A nest containing 

 3 eggs of the pipit and 2 of the parasite was found by Albert C. Lloyd 

 at Last Mountain Lake, southern Saskatchewan, May 29, 1932, and 

 was reported by Todd (1947, p. 417). 



Bohemian Waxwing 



Bombycilla garrula Linnaeus 



The Bohemian waxwing breeds largely in regions where the brown- 

 headed cov/bird does not breed, but in at least one area of symipatry on 

 one occasion it has been recorded as a host of the parasite. The record, 

 Idndly sent me from the files of the British Columbia Nest Records 

 Scheme, reports that a deserted nest, containing 3 eggs of the host and 

 2 of the cowbird, was found on June 27, 1957, at Grand Forks, British 

 Columbia. The host is the North American race B.g. paUidiceps, 

 and the parasite, M.a. artemisiae. 



Cedar Waxwing 



Bombycilla cedrorum Vieillot 



The cedar waxwing seldom is parasitized, but it has been recorded 

 as a host in Ontario, Quebec, New York, Connecticut, Ohio, Michigan, 

 Wisconsin, Minnesota, Montana, Alberta, and British Columbia. I 

 have learned of only 18 actual cases. Those from Montana, Alberta, 

 and British Columbia refer to the northwestern race of the cowbird, 



