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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 November
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.)
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