BIRDS OF ARGENTINA, PARAGUAY, URUGUAY, AND CHILE 355 



Family TURDIDAE 



TURDUS RUFIVENTRIS RUFIVENTRIS VieUlot 



Turdus rufiventris, Vieillot, Nouv. Diet. Hist. Nat., vol. 20, 181 S, p. 22G. 

 (Brazil.") 



The rufous-bellied robin was recorded as follows: Kilometer 25, 

 west of Puerto Pinasco, Paraguay, September 1, 1920 ; Kilometer 80, 

 west of Puerto Pinasto, Paraguay, September 13 (adult male) ; 

 Villa Concepcion, Paraguay, October 3; Formosa, Formosa, August 

 23 and 24; Las Palmas, Chaco, July 15 to 30 (adult male, July 30) ; 

 Resist encia, Chaco, July 8 to 10 (adult male, July 8) ; Tafi Viejo, 

 Tucuman, April 17, 1921 (female) ; Lazcano, Uruguay, February 5 

 to 8; San Vicente, Uruguay, January 25 to 31 (young males, adult 

 females); La Paloma, Uruguay, Januar}?^ 23; Berazategui, Buenos 

 Aires, January 29, 1920; Lavalle, Buenos Aires, October 27 to No- 

 vember 13 (pair, October 30), 



The nine skins preserved offer no differences save those due to 

 wear or change in plumage. A male killed January 30 is in fully 

 developed juvenal plumage. Adult females taken January 25 are 

 badly worn and have initiated the post breeding molt in wing and 

 tail, while from that date on birds were in the ragged condition 

 common the world over to robins in fall. 



Cory has described a subspecies juensis*' on the basis of paler 

 dorsal and posterior ventral regions. I have seen no skins from 

 Ceara, the type-locality, but a specimen from Bahia seems somewhat 

 paler than those from farther south. 



A male, shot July 30, had the tomia olive ocher, becoming light 

 yellowish olive on mandible and yellowish olive at base of maxilla; 

 bare ej^elid yellow ocher, becoming light yellowish olive toward 

 outer margin, forming a prominent light eyering ; iris May's brown ; 

 tarsus and toes neutral gray. 



The zorzal Colorado (or red thrush) was an inhabitant of thickets 

 or semiopen forests often in the vicinity of water, though in northern 

 Buenos Aires it was encountered in the dry, open groves on the 

 larger estancias. The birds were seen frequently on the ground in 

 forest, or occasionally at the open borders of lagoons, but at any 

 alarm darted to cover. On large estates, as at Los Yngleses, the Gib- 

 son estancia near Lavalle, they came out familiarly on the lawns. 

 In notes, appearance, and habits they were strongly suggestive of 

 the robins of North America. Their song was a sweet, broken war- 

 ble, given from a resting place behind leafy branches in the top of 



*^ Brabourne and Chubb, Birds South Amer., vol. 1, December, 1912, p. 344, cite 

 " Brazil=Rio." 



*'' Planesticus rufiventer juensis Cory, F^eld Mus. Nat. Hist., Orn. ser., vol. 1, no. 10, 

 Aug. 30, 1916, p. 344. (Jua, near Iguatu, Ceara. Brazil.) 



