Bulletin - United States National Museum - si-pddr - Smithsonian ...
Bulletin - United States National Museum - si-pddr - Smithsonian ... Bulletin - United States National Museum - si-pddr - Smithsonian ...
388 BULLETIN 133, UNITED STATES NATIONAL MUSEUM January young still in juvenal plumage were found near San Vicente, Uruguay, while at Rio Negro other young were seen during the middle of February. A fledgling was taken here on February 17 from an old nest of Pseudoseisura lophotes. The large domed structures constructed by this species are very durable so that they resist the weather for a considerable time after the tracheophones are through with them. Though I searched a number at various times I did not succeed in finding eggs of the cowbirds. The call notes of this cowbird are harsh and emphatic, chrut or check repeated incessantly when the birds are anxious about some nest site. The males utter a sweet warbling song, a pleasant melody that has earned the species the sobriquet of musico, a name well warranted. Even during the breeding season little bands of baywinged cowbirds were found in company often voicing their sweetly modulated whistled song to the accompaniment of the more prosaic bubbling of Molothrvs honariensis. During winter bay-winged cow- birds gathered in little bands of 20 to 50 members that frequented the vicinity of ranch buildings or little open savannas in the Chaco, where they fed on the ground or rested in close companies in the tops of low trees. Their brown wings distinguished them easily from other blackbirds. Young in juvenal plumage are similar to adults, but are faintly and indistinctly streaked with whitish below, and spotted obscurely with dusky on crown and back. ARCHIPLANUS ALBIROSTRIS (VieiUot) Cassictis albirostris Vieillot, Nouv. Diet. Hist. Nat., vol. 5, 1816, p. 364. (Paraguay.) The genus Archiplanus Cabanis, with the present species as its type, has been separated from Cacicus by Miller ^^ on smaller, more wedge-shaped bill, with culmen and commissure nearly straight, shorter, more rounded wing tip, with ninth primary shorter than third, and (usually) better developed aftershaft. Miller has in- cluded in Archiplanus the species current as Cactus chrysopter-us, C. chrysonotus^ C. leucorainphus^ and the bird described by Dubois as Agelaius sclateri. Todd^^ has also recognized Archiplanus as distinct and has added to it the species previously knoAvn under the name Airiblycercus solitarius. With removal of the present species, known in recent years as Cacicus chrysopterus (Vigors), to Archiplanus its name will become Archiplanus albirostris Vieillot, a specific name not available 81 Auk, 1924, pp. 463-465. saproc. Biol. Soe. Washington, vol. 37, July 8, 1924, pp. 114-115.
BIRDS OF ARGENTINA, PARAGUAY, URUGUAY, AND CHILE 389 in Gacicus as it was antedated by Tanagra alMrostris Linnaeus, 1764, a s3'nonym of Gacicus cela (Linnaeus), 1758. Vieillot's description of this small cacique was based on Azara who gave no locality in connection with his notes on the yaqyu negro y amarillo. The type-locality may be assumed to be Paraguay. The small, yellow-rumped cacique was common in the Chaco, but was not recorded elsewhere. It was seen frequently at Resistencia, Chaco, from July 8 to 10 (adult female, taken July 8), and at Las Palmas, July 13 to 31. Near the Riacho Pilaga, Formosa, it was found from August 7 to 18, and was seen near Formosa, Formosa, August 23. In the vicinity of Puerto Pinasco it was noted from September 1 to 30, from the Rio Paraguay, west for 200 kilometers. This cacique frequented forest trees in much the same manner as orioles, though occasionally it came into bushes growing among saw grass at the borders of savannas. Though oriolelike in form and color in habits these birds differed, as, in addition to searching the smaller branches, they crept about on the larger limbs or examined dead stubs by pushing and prying in crevices or bark with the pointed mandibles separated at the tip. This was done force- fully while the birds clung with their feet or braced with their tails. On September 9 they were in pairs but were not breeding, and nesting was not noted until September 30, when new nests under construction were found. These were woven of a black rootlet and hung as pendant bags from the tips of slender limbs. Some were 2 or 3 feet long, with a globular bag at the end to contain the nest proper. The song was a sweet, broken warble and the note a mewing call that may be represented as char. They were known commonly as pajaro sergente from the yellow shoulder epaulettes, while the Toba Indians designated them as ve da Ua koh. A female, shot July 8, had the bill sky gray ; iris pale ochraceous salmon; tarsus and toes blackish brown. There was variation, among them as to color of bill, from light to dark. One taken has the crown and nape mottled with yellow. ARCHIPLANUS SOLITARIUS (Vieillot) Cassicus solitarius Vieillot, Nouv. Diet. Hist. Nat., vol. 5, 1816, p. 364. (Paraguay.) Hellmayr *^ has considered Cassicus nigerHmus of Spix ®* distinct from Cassicus solitarius Vieillot, but reference to Azara's original description of the yapu negro ^^ indicates that the two are identical. Azara remarks of the bill "' del color y materia que en el precedente." 83 Abh. Kon. Bayerischen Akad. Wiss., Kl. 2, vol. 23, Abt. 3, May 20, 1906, p. 613. 8*Av. Spec. Nov. Brasiliam, vol. 7, 1824, p. 66, pi. 63, flg. 1. (Banks of the Amazon.) s^Apunt. Hist. Nat. Pax. Paraguay, vol. 1, 1802, pp. 268-269. 54207—26 26
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BIRDS OF ARGENTINA, PARAGUAY, URUGUAY, AND CHILE 389<br />
in Gacicus as it was antedated by Tanagra alMrostris Linnaeus,<br />
1764, a s3'nonym of Gacicus cela (Linnaeus), 1758.<br />
Vieillot's description of this small cacique was based on Azara<br />
who gave no locality in connection with his notes on the yaqyu negro<br />
y amarillo. The type-locality may be assumed to be Paraguay.<br />
The small, yellow-rumped cacique was common in the Chaco, but<br />
was not recorded elsewhere. It was seen frequently at Re<strong>si</strong>stencia,<br />
Chaco, from July 8 to 10 (adult female, taken July 8), and at Las<br />
Palmas, July 13 to 31. Near the Riacho Pilaga, Formosa, it was<br />
found from August 7 to 18, and was seen near Formosa, Formosa,<br />
August 23. In the vicinity of Puerto Pinasco it was noted from<br />
September 1 to 30, from the Rio Paraguay, west for 200 kilometers.<br />
This cacique frequented forest trees in much the same manner<br />
as orioles, though occa<strong>si</strong>onally it came into bushes growing among<br />
saw grass at the borders of savannas. Though oriolelike in form<br />
and color in habits these birds differed, as, in addition to searching<br />
the smaller branches, they crept about on the larger limbs or examined<br />
dead stubs by pushing and prying in crevices or bark with<br />
the pointed mandibles separated at the tip. This was done force-<br />
fully while the birds clung with their feet or braced with their tails.<br />
On September 9 they were in pairs but were not breeding, and nesting<br />
was not noted until September 30, when new nests under construction<br />
were found. These were woven of a black rootlet and<br />
hung as pendant bags from the tips of slender limbs. Some were<br />
2 or 3 feet long, with a globular bag at the end to contain the nest<br />
proper.<br />
The song was a sweet, broken warble and the note a mewing call<br />
that may be represented as char. They were known commonly as<br />
pajaro sergente from the yellow shoulder epaulettes, while the Toba<br />
Indians de<strong>si</strong>gnated them as ve da Ua koh.<br />
A female, shot July 8, had the bill sky gray ;<br />
iris pale ochraceous<br />
salmon; tarsus and toes blackish brown. There was variation,<br />
among them as to color of bill, from light to dark. One taken has<br />
the crown and nape mottled with yellow.<br />
ARCHIPLANUS SOLITARIUS (Vieillot)<br />
Cas<strong>si</strong>cus solitarius Vieillot, Nouv. Diet. Hist. Nat., vol. 5, 1816, p. 364.<br />
(Paraguay.)<br />
Hellmayr *^ has con<strong>si</strong>dered Cas<strong>si</strong>cus nigerHmus of Spix ®* distinct<br />
from Cas<strong>si</strong>cus solitarius Vieillot, but reference to Azara's original<br />
description of the yapu negro ^^ indicates that the two are identical.<br />
Azara remarks of the bill "' del color y materia que en el precedente."<br />
83 Abh. Kon. Bayerischen Akad. Wiss., Kl. 2, vol. 23, Abt. 3, May 20, 1906, p. 613.<br />
8*Av. Spec. Nov. Bra<strong>si</strong>liam, vol. 7, 1824, p. 66, pi. 63, flg. 1. (Banks of the<br />
Amazon.)<br />
s^Apunt. Hist. Nat. Pax. Paraguay, vol. 1, 1802, pp. 268-269.<br />
54207—26 26