Bulletin - United States National Museum - si-pddr - Smithsonian ...
Bulletin - United States National Museum - si-pddr - Smithsonian ... Bulletin - United States National Museum - si-pddr - Smithsonian ...
250 BULLETIN ia3, UNITED STATES NATIONAL MUSEUM The birds were shy and difficult of approach. Attention was at- tracted to them by their song, a rapid chijrpy cliif'py chippy chipy given as they sat on the top of a bush or post, with tail slightly raised. At the slightest alarm thej'^ made long flights low among the bushes, where it was difficult to follow their course. Xear Zapala, Neuquen, a second specimen (preserved in alcohol) was shot on December 8, 1920. The bird was encountered there in heavy tracts of thorny brush in an arroyo leading toward the lowlands. At Con- con, Chile, tAvo Avere seen on April 28 in open brush on a sloping hillside. The curved bill of this species gives it a thrasherlike appearance, a suggestion heightened by its habits and choice of haunts. The male shot April 28 had the bill, in general, dull black, shading at base of cutting edge of maxilla and at base of gonys to hair brown; gape Isabella color; iris bone brown; tarsus and toes clove brown. UPUCERXmA VALIDIROSTRIS (Burmeister) Ochetorhynchus validirostru Bubmeistbe, Keise La Plata-Staaten, vol. 2, 1861, p. 464. (Sierra de Mendoza.) The present species was observed occasionally near Potrerillos, Mendoza, from March 15 to 21, 1921, and an immature female was secured March 15 at an altitude of 1,500 meters. The birds were found singly among bushes scattered over sloping hillsides, or on the gravel flood plains of small streams, where they Avalked about on the ground. They were secretive and Avere difficult to detect until they rose and flew Avith a strong undulating flight aboA^e the bushes. Occasionally one uttered a Ioav chtirlt, but as a rule they were silent. The specimen taken is fully grown, though immature. The throat is somewhat whiter than the breast, but the tail is distinctly ru- fescent, so that the specimen does not seem to agree with Scott's Upucerthia fitzgeraldi^^ which is supposedly a subspecies of validirostris. The feathers of breast and throat have very faintly marked darker tips, an indication of the more prominent breast markings in U. dumetaria. The specimen measures as follows : Wing, 80.5 ; tail, 75.5; culmen from base, 33.7; tarsus, 26.7 mm. The bill in this bird in life was black, shading to storm gray at base of mandible ; iris deep quaker blue ; tarsus and toes dull black. UPUCERTHIA CERTHIOmES (d'Orbigrny and Lafresnaye) Ana'bates certhioides d'OfiBiGNY and Lafresnaye, Mag. Zool., 1838, cl. 2, p. 15. (Corrientes.) The present species was recorded at Las Palmas, Chaco, from July 14 to 31, 1920 (an immature male, taken July 14, and an adult =3 Upucerthia fltsgeraldi Scott, Bull. Brit. Orn. Club, vol. 10, Apr. 30, 1900, p. Ixili. (Pucnte del Inca, Mendoza.)
BIRDS OF ARGENTINA, PARAGUAY, URUGUAY, AND CHILE 251 female, July 26) ; Riacho Pilaga, Formosa, August 11 and 18 (two males, taken on the latter date) ; and Tapia, Tucuman, April 7 to 13 (an immature female, shot April 7). There is no appreciable difference in appearance in specimens from the three localities rep- resented by the five birds preserved as skins. The association of this and allied straight-billed forms in the genus Ufucerthia with spe- cies of the U. dumetaria type is questionable. These birds of wrenlike appearance and action inhabited heavy brush where they worked about on or near the ground, in such dense cover that it was difficult to observe them. At any alarm they gave vent to loud whistled calls, suggestive of those of a canyon wren, and at times were called out by squeaking noises. Their notes are loud and might easily be attributed to a bird of greater bulk. In an immature male the maxilla and tip of the mandible were dull black; base of mandible pallid brownish drab; tarsus and toes fuscous. UPUCERTHIA LUSCINIA (Barmeister) Ochetorhynchus Luscinia Burmeister, Journ. fiir Ornith., 1860, p. 249. ( Mendoza. ) '* The present species was encountered only on a dry flat above the city of Mendoza, Province of Mendoza, western Argentina, on March 13, 1921, when a female was taken. The few noted Avere found in low brush along a dry wash. This bird has been treated as a geographic race of U. cei^thioideSy a usage not borne out in my opinion by examination of specimens, since luscima^ in addition to larger size, much more robust form, and more grayish coloration, has a decidedly longer tail and broader rec- trices. The difference between the two is so extensive that any in' tergradation, indicating subspecific relationship, must be considered extremely doubtful unless it may be definitely proved by specimens. CINCLODES FUSCUS FUSCUS (Vieillot) Anthu8 fuscus Vieillot, Nouv. Diet. Hist. Xat., vol. 26, 1818, p. 490. (Montevideo and Buenos Aires.) At Berazategui, in the Province of Buenos Aires, several were seen and a male was taken on June 29, 1920, on low ground near the Rio de la Plata. An immature male Avas shot at El Salto, at an ele- vation of 1,600 meters above Potrerillos, Mendoza, on March 19, 1921. This second specimen has several white feathers in the crov.n, an albinistic tendency. It is darker brown than the one shot near Buenos Aires. These birds walk on the ground with constantly wagging tails, and when flushed may fly, with a flash of the light band in the wings, to a ** According to Ilartert (Nov. Zool.. vol. 16, December, 1909, p. 208).
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250 BULLETIN ia3, UNITED STATES NATIONAL MUSEUM<br />
The birds were shy and difficult of approach. Attention was at-<br />
tracted to them by their song, a rapid chijrpy cliif'py chippy chipy<br />
given as they sat on the top of a bush or post, with tail slightly<br />
raised. At the slightest alarm thej'^ made long flights low among<br />
the bushes, where it was difficult to follow their course. Xear Zapala,<br />
Neuquen, a second specimen (preserved in alcohol) was shot on<br />
December 8, 1920. The bird was encountered there in heavy tracts<br />
of thorny brush in an arroyo leading toward the lowlands. At Con-<br />
con, Chile, tAvo Avere seen on April 28 in open brush on a sloping<br />
hill<strong>si</strong>de.<br />
The curved bill of this species gives it a thrasherlike appearance, a<br />
suggestion heightened by its habits and choice of haunts.<br />
The male shot April 28 had the bill, in general, dull black, shading<br />
at base of cutting edge of maxilla and at base of gonys to hair<br />
brown; gape Isabella color; iris bone brown; tarsus and toes clove<br />
brown.<br />
UPUCERXmA VALIDIROSTRIS (Burmeister)<br />
Ochetorhynchus validirostru Bubmeistbe, Keise La Plata-Staaten, vol. 2,<br />
1861, p. 464. (Sierra de Mendoza.)<br />
The present species was observed occa<strong>si</strong>onally near Potrerillos,<br />
Mendoza, from March 15 to 21, 1921, and an immature female was<br />
secured March 15 at an altitude of 1,500 meters. The birds were<br />
found <strong>si</strong>ngly among bushes scattered over sloping hill<strong>si</strong>des, or on the<br />
gravel flood plains of small streams, where they Avalked about on<br />
the ground. They were secretive and Avere difficult to detect until<br />
they rose and flew Avith a strong undulating flight aboA^e the bushes.<br />
Occa<strong>si</strong>onally one uttered a Ioav chtirlt, but as a rule they were <strong>si</strong>lent.<br />
The specimen taken is fully grown, though immature. The throat<br />
is somewhat whiter than the breast, but the tail is distinctly ru-<br />
fescent, so that the specimen does not seem to agree with Scott's<br />
Upucerthia fitzgeraldi^^ which is supposedly a subspecies of validirostris.<br />
The feathers of breast and throat have very faintly marked<br />
darker tips, an indication of the more prominent breast markings in<br />
U. dumetaria. The specimen measures as follows : Wing, 80.5 ; tail,<br />
75.5; culmen from base, 33.7; tarsus, 26.7 mm.<br />
The bill in this bird in life was black, shading to storm gray at<br />
base of mandible ; iris deep quaker blue ; tarsus and toes dull black.<br />
UPUCERTHIA CERTHIOmES (d'Orbigrny and Lafresnaye)<br />
Ana'bates certhioides d'OfiBiGNY and Lafresnaye, Mag. Zool., 1838, cl. 2,<br />
p. 15. (Corrientes.)<br />
The present species was recorded at Las Palmas, Chaco, from<br />
July 14 to 31, 1920 (an immature male, taken July 14, and an adult<br />
=3 Upucerthia fltsgeraldi Scott, Bull. Brit. Orn. Club, vol. 10, Apr. 30, 1900, p. Ixili.<br />
(Pucnte del Inca, Mendoza.)