Bulletin - United States National Museum - si-pddr - Smithsonian ...
Bulletin - United States National Museum - si-pddr - Smithsonian ... Bulletin - United States National Museum - si-pddr - Smithsonian ...
382 BULLETIN 133, UNITED STATES NATIONAL MUSEUM Their usual call notes were closely similar to those of Passer domes- ficus, while another note resembled check check. The song of the male may be represented as cJiee-ee-ee-ee, a rather hard, rattling note that was followed by some twittering calls. The Anguete Indians called this species mah ho. ) AGELAIUS RUFICAPILLUS Vieillot Agclaius ruficapilliis Vieiixot, Nduv. Diet. Hist. Nat., vol. 34, 1819, p. 53(j. ( Paraguay. Th? present species was another that I encountered only in the Chaco. It was recorded at Las Palmas, Chaco, July 23 and 28, 1920, when two adult males were taken from small flocks at the borders of lagoons. Other flocks were observed near Puerto Pin- asco, Paraguay, September 3, and in the vicinity of Kilometer 80, w^est of Puerto Pinasco, from September 9 to 17. They were especially common here on the banks of esteros and lagoons flooded by heavy rains. At the latter point a male was collected September 10 and a female September 17. Often the birds walked about on floating vegetation among rushes where they were entirely concealed, but when startled flew up to alight in a close flock in some clump of grass, rushes, or low tree. Their call was a low chick. Their flight Avas undulating. The Anguete Indians called this bird gwas gookh, apparently a group name for several species of blackbirds. ICTERUS PYRRHOPTERUS PYRRHOPTERUS (Vieillot) Agelaius pyrrhopterus Vieillot, Nouv. Diet. Hist. Nat., vol. 34, 1819, p. 543. (Paraguay.") This curious oriole was recorded as follows : Resistencia, Chaco, July 10, 1920; Las Palmas, Chaco, July 27 (adult male taken); Riacho Pilaga, Formosa, August 14 (female) ; Formosa, Formosa, August 24 (female) ; Puerto Pinasco, Paraguay, September 1 (male) ; Kilometer 80, west of Puerto Pinasco, Paraguay, September 7 to 20 (female, September 7; male prepared as skeleton, September 15) ; Tapia, Tucuman, April 11 and 13, 1921. The specimens secured have slightly smaller bills and shorter tails than three (including the type) from the Province of Buenos Aires, which represent Icterus f. argoiJtilus Oberholser. It is possible, liowever, that with sufficient material for adequate judgment the two supposed forms will prove inseparable. These orioles were found in groves and gardens in the Chaco, and were occasionally noted in the dry forests of northern Tucu- '" Azara, from whom VleiUot's account of this bird is taken, mentions no definite locality In connection witli this species.
BIRDS OF ARGENTINA, PARAGUAY, URUGUAY, AND CHILE 383 man. They were sprightly and active in movement and jerked the tail rapidly and violently as they moved about, especially when alarmed at the presence of a snake or some other enemy. In spring they were found about the handsome blossoms of such trees as the lapacho {Tecoma ohtusata) and at all seasons were partial to growths of vines or creepers. Their active search for food often led them to swing head down from small twigs. The call note of the male was a sharp spick spick, and the song was clear and whistled. The female uttered a mewing note or a harsh rattling call. An adult female had the bill black; iris Kaiser brown; tarsus neutral gray; claws fuscous. MOLOTHRUS BONARIENSIS BONARIENSIS (Gmelin) Tanagra bonariensis Gmelin, Syst. Nat., vol. 1, pt. 2, 1789, p. 898. (Buenos Aires.) The series of 15 skins secured seems uniform in size and color except that specimens from northern Rio Negro and Mendoza appear very slightly larger and have heavier bills than those from Paraguay. All are considered as representative of the typical form. Records for the species are as follows : Santa Fe, Santa Fe, July 4, 1920; Resistencia, Chaco, July 8 to 10; Las Palmas, Chaco, July 12 to 31 (female taken July 19; male, July 31) ; Riacho Pilaga, For- mosa, August 7 to 20 (males collected August 14 and 15) ; Formosa, Formosa, August 23 and 24; Puerto Pinasco, Paraguay, September 2 and 3; Kilometer 80, west of Puerto Pinasco, September 6 to 25 (male, September 10) ; Dolores, Buenos Aires, October 21 ; Lavalle, Buenos Aires, October 23 to November 15 (male, October 29; females, General Roca, Rio Negro, November October 29 and November 13) ; 23 to December 3 (male, November 30) ; Zapala, Neuquen, December 9 ; Carhue, Buenos Aires, December 15 to 18 ; Victorica, Pampa, December 23 to 29 ; Carrasco, Uruguay, January 16, 1921 ; La Paloma, Uruguay, January 23; San Vicente, Uruguay, January 25 to February 2 (female, January 27; juvenile male, January 31) ; Lazcano, Uruguay, February 3 to 9; Rio Negro, Uruguay, February 14 to 18; Potrerillos, Mendoza, March 16 and 18; Tunuyan, Mendoza^ March 22 to 28 (adult female, March 26; adult and immature males, March 26 and 28). Some of the skins from Formosa and Paraguay, taken in August and September, are in very worn plumage at this early season, so that males show only traces of the gloss that normally covers the entire body plumage. One adult female from Las Palmas, Chaco, is so much darker than others that it was supposed to be hrevirostris until carefully compared. Adults from Tunuyan, Mendoza, are in
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382 BULLETIN 133, UNITED STATES NATIONAL MUSEUM<br />
Their usual call notes were closely <strong>si</strong>milar to those of Passer domes-<br />
ficus, while another note resembled check check. The song of the<br />
male may be represented as cJiee-ee-ee-ee, a rather hard, rattling note<br />
that was followed by some twittering calls. The Anguete Indians<br />
called this species mah ho.<br />
)<br />
AGELAIUS RUFICAPILLUS Vieillot<br />
Agclaius ruficapilliis Vieiixot, Nduv. Diet. Hist. Nat., vol. 34, 1819, p.<br />
53(j. ( Paraguay.<br />
Th? present species was another that I encountered only in the<br />
Chaco. It was recorded at Las Palmas, Chaco, July 23 and 28,<br />
1920, when two adult males were taken from small flocks at the<br />
borders of lagoons. Other flocks were observed near Puerto Pin-<br />
asco, Paraguay, September 3, and in the vicinity of Kilometer 80,<br />
w^est of Puerto Pinasco, from September 9 to 17. They were<br />
especially common here on the banks of esteros and lagoons flooded<br />
by heavy rains. At the latter point a male was collected September<br />
10 and a female September 17. Often the birds walked about on<br />
floating vegetation among rushes where they were entirely concealed,<br />
but when startled flew up to alight in a close flock in some clump of<br />
grass, rushes, or low tree. Their call was a low chick. Their flight<br />
Avas undulating.<br />
The Anguete Indians called this bird gwas gookh, apparently a<br />
group name for several species of blackbirds.<br />
ICTERUS PYRRHOPTERUS PYRRHOPTERUS (Vieillot)<br />
Agelaius pyrrhopterus Vieillot, Nouv. Diet. Hist. Nat., vol. 34, 1819,<br />
p. 543. (Paraguay.")<br />
This curious oriole was recorded as follows : Re<strong>si</strong>stencia, Chaco,<br />
July 10, 1920; Las Palmas, Chaco, July 27 (adult male taken);<br />
Riacho Pilaga, Formosa, August 14 (female) ; Formosa, Formosa,<br />
August 24 (female) ; Puerto Pinasco, Paraguay, September 1<br />
(male) ; Kilometer 80, west of Puerto Pinasco, Paraguay, September<br />
7 to 20 (female, September 7; male prepared as skeleton,<br />
September 15) ; Tapia, Tucuman, April 11 and 13, 1921. The<br />
specimens secured have slightly smaller bills and shorter tails than<br />
three (including the type) from the Province of Buenos Aires,<br />
which represent Icterus f. argoiJtilus Oberholser. It is pos<strong>si</strong>ble,<br />
liowever, that with sufficient material for adequate judgment the<br />
two supposed forms will prove inseparable.<br />
These orioles were found in groves and gardens in the Chaco,<br />
and were occa<strong>si</strong>onally noted in the dry forests of northern Tucu-<br />
'" Azara, from whom VleiUot's account of this bird is taken, mentions no definite<br />
locality In connection witli this species.