HOST RELATIONS OF PARASITIC COWBIRDS 213 



species P.c. chrysogaster) in southwestern Ecuador. No previous 

 instances of cowbird parasitism on this bird are known. 



Antillean Bullfinch 



Loxigilla noctis (Linnaeus) 



According to information sent me by Mrs. F. C. K. Anderson of 

 the Barbados Museum and Historical Society, 1 egg of the shiny 

 cowbu'd (Al.b. minimus) was found in a nest of this finch near 

 Bridgetown, Barbados. This is the second record for this host 

 (race L.n. harhadensis) . 



Chestnut-bellied Rice Grosbeak 



Oryzoborus angolensis (Linnaeus) 



According to Chagas (in litt.), this finch is victimized by the shiny 

 cowbird in Minas Geraes, Brazil. No previous records for the species 

 are known. The nominate race of the finch as well as of the parasite 

 is involved here. 



Yellow Finch 



Sicalis flaveola (Linnaeus) 



The subspecies S. f. pelzelni has been recorded as a host of the 

 shiny cowbird on only a few occasions (see Friedmann, 1929, p. 113; 

 1934, p. 345). It is worth noting that Pereyra (1937, p. 302) smce 

 has found it to be parasitized in Pampa province, Argentina, as has 

 Hoy (ms., 1961) in Salta province. The latter observer found that 

 this fijich was prone to desert its nest somewhat readily when it was 

 parasitized. 



Misto Yellow Finch 



Sicalis luteola (Sparrman) 



On the basis of reports by Gibson and by Devincenzi, I originally 

 listed this finch (race luteiventris) as a victim of the shiny cowbu'd 

 in Argentma and Uruguay, but I had no f mother data. Harrison 

 (1950, pp. 6-7) has since recorded an egg of the parasite from a nest 

 of this fosterer in Argentina. Inasmuch as neither the finch nor the 

 cowbird are local or rare, and inasmuch as the nest of the former 

 seems in every way suitable, it is difficult to see why the misto finch 

 is not parasitized more frequently. The nominate races of both the 

 finch and the cowbird are involved here. The authors mentioned 

 above refer to this finch under the name Sicalis arvensis. 



Red-crested Finch 



Coryphospingus cucullatus (P. L. S. Miiller) 



Near Salta, northwestern Argentina, Hoy (ms., 1961) found that 

 this bird (subspecies ruhescens) was parasitized rather frequently and 

 that it deserted its nest in a number of such instances. It has 



