Bulletin - United States National Museum - si-pddr - Smithsonian ...
Bulletin - United States National Museum - si-pddr - Smithsonian ... Bulletin - United States National Museum - si-pddr - Smithsonian ...
152 BULLETIN 133^ UNITED STATES NATIONAL MUSEUM in the posterior border of the metasterniim, while in the nine remain- ing there are four such indentations. In hypoleucos and macularia the maxilla is grooved nearly to the tip, while in ocrophus and soli- taria this groove extends less than two-thirds of the length of the maxilla. Actitis may be used for the first two leaving ocroylius, the type of Tringa^ and solitaria united in the genus Tringa. Of the two species that remain of the 13 mentioned by Hartert Hetero- scelus may be used for incanus (and also for hrevipes) because of its difference in tarsal scutellation, while glareola, closely allied to the species here placed in Totanus, differs in that the tarsus is de- cidedly less than one and one-half times the middle toe without the claw and so may be maintained in Rhyacophilus. During my work in South America the greater yellowlegs was recorded as follows: Kilometer 80, west of Puerto Pinasco, Para- guay, September 8 to 21, 1920; Kilometer 200, in the same region, September 24; Dolores, Buenos Aires, October 22; Lavalle, Buenos Aires, October 23 to November 15 ; Carhue, Buenos Aires, December 15 to 17; San Vicente, Uruguay, January 31 and February 2; Laz- cano, Kocha, February 5 to 8; 25 de Mayo, Buenos Aires, March 2; Guamini, Buenos Aires, March 3 to 8; Tunuyan, Mendoza, March 25 to 28; Tucuman, Tucuman, April 5; Concon, Chile, April 24 and 26. After their arrival in September greater yellowlegs were dis- tributed throughout the open pampa wherever shallow ponds offered suitable feeding places. Occasionally 10 or 20 gathered in a flock, especially when northward migration was under way in March and April, but when on their wintering grounds it was usual to find two or three in company, seldom more. They are rather silent during the winter season but when the northward journey begins are as noisy as is their custom in the north. The species is large so that it is attractive to pot hunters and many are killed. I saw a number of crippled birds during the last two months of my stay in Argentina and consider that it is these injured individuals, unable to perform the necessary flight, or without desire to do so from their injuries, that are recorded on the pampas from May to August when all should be in the Northern Hemisphere. Reports of their breeding in Argentina, based on the presence of these laggards in migration are wholly unauthenticated. An adult female shot February 2 at San Vicente, Uruguay, and another taken March 6 at Guamini, Buenos Aires, were molting the feathers of the forepart of the body and the neck. The primaries were fresh and unworn and appear to have been newly grown.
BIRDS OF ARGENTINA, PARAGUAY, URUGUAY, AND CHILE 153 CROCETHIA ALBA (Pallas) Tnjnga alba Pallas, in Vroeg, Cat. Rais., 1764, Adumbr., p. 7. (Coast of North Sea.) An adult female of the sanderling was taken November 6, 1920, on the exposed outer beach 24 kilometers south of Cape San Antonio, Buenos Aires, one of the feAv birds that cared to brave the severe gale then in progi-ess. On the following day 20 in three flocks passed in southward migration, flying about a meter above the >and near the line marked by the wash of the waves. The species was not recorded again until April 29, 1921, when 25 were seen near Concon, Chile, in flight northward along the coast. PISOBIA MELANOTOS (Vieillot) Tringa melanotos Vieillot, Nouv. Diet. Hist. Nat., vol. 34, 1819, p. 462. (Paraguay.) Azara, with his usual meticulous care, described his chorlito lonio pardo—the basis of Vieillot's THnga melanotos—so minutel}- that there is no mistaking it for one of the two larger Pisohia, while his note to the effect that the tarsus was greenish points unmistakably to the pectoral sandpiper, since, as is well known to observant field naturalists, Baird's sandpiper, the only other species that may here be confused, has the tarsus black. The dimensions given by Azara are also those of the pectoral sandpiper. Sadly enough, Tringa melanotos on page 462 of Vieillot's work has priority over Tringa maculata on page 465 and so must supplant it. The pectoral sandpiper was recorded as fairly common. At Ki- lometer 80, west of Puerto Pinasco, Paraguay, the species arrived on September 9, 1920, and passed in small numbers until the close of the month. On September 24 and 25, thirty or more were seen on muddy areas at the Laguna Wall at Kilometer 200. In crossing from Conessa to Lavalle, Buenos Aires, October 22, two flocks, con- taining in the aggregate 20 individuals, were seen near pools on the grass-grown pampa. Four were noted at the mouth of the Rio Ajo October 25. At Carhue, Buenos Aires, one was found in company with lesser yellowlegs December 15. On January 15 I observed four or five captive in the zoological gardens in Montevideo, Uruguay, and was informed that they had been captured that season. Near Lazcano, Uruguay, two were seen at a small lagoon, and on the following morning I found a flock of 16 resting on mud lumps in a pool in a road. These latter were evidently tired, as all rested quietly in the sun, several crouched on their breasts. When flushed the flock flew on to the westward instead of following down the Rio Cebollati, as was the custom of other migrating shore birds noted here. At Guamini, Buenos Aires, a pectoral sandpiper was noted on March 4
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152 BULLETIN 133^ UNITED STATES NATIONAL MUSEUM<br />
in the posterior border of the metasterniim, while in the nine remain-<br />
ing there are four such indentations. In hypoleucos and macularia<br />
the maxilla is grooved nearly to the tip, while in ocrophus and soli-<br />
taria this groove extends less than two-thirds of the length of the<br />
maxilla. Actitis may be used for the first two leaving ocroylius,<br />
the type of Tringa^ and solitaria united in the genus Tringa. Of<br />
the two species that remain of the 13 mentioned by Hartert Hetero-<br />
scelus may be used for incanus (and also for hrevipes) because of<br />
its difference in tarsal scutellation, while glareola, closely allied to<br />
the species here placed in Totanus, differs in that the tarsus is de-<br />
cidedly less than one and one-half times the middle toe without the<br />
claw and so may be maintained in Rhyacophilus.<br />
During my work in South America the greater yellowlegs was<br />
recorded as follows: Kilometer 80, west of Puerto Pinasco, Para-<br />
guay, September 8 to 21, 1920; Kilometer 200, in the same region,<br />
September 24; Dolores, Buenos Aires, October 22; Lavalle, Buenos<br />
Aires, October 23 to November 15 ; Carhue, Buenos Aires, December<br />
15 to 17; San Vicente, Uruguay, January 31 and February 2; Laz-<br />
cano, Kocha, February 5 to 8; 25 de Mayo, Buenos Aires, March 2;<br />
Guamini, Buenos Aires, March 3 to 8; Tunuyan, Mendoza, March<br />
25 to 28; Tucuman, Tucuman, April 5; Concon, Chile, April 24<br />
and 26.<br />
After their arrival in September greater yellowlegs were dis-<br />
tributed throughout the open pampa wherever shallow ponds offered<br />
suitable feeding places. Occa<strong>si</strong>onally 10 or 20 gathered in a flock,<br />
especially when northward migration was under way in March<br />
and April, but when on their wintering grounds it was usual to find<br />
two or three in company, seldom more. They are rather <strong>si</strong>lent<br />
during the winter season but when the northward journey begins<br />
are as noisy as is their custom in the north. The species is large<br />
so that it is attractive to pot hunters and many are killed. I saw<br />
a number of crippled birds during the last two months of my stay<br />
in Argentina and con<strong>si</strong>der that it is these injured individuals, unable<br />
to perform the necessary flight, or without de<strong>si</strong>re to do so from<br />
their injuries, that are recorded on the pampas from May to August<br />
when all should be in the Northern Hemisphere. Reports of their<br />
breeding in Argentina, based on the presence of these laggards in<br />
migration are wholly unauthenticated.<br />
An adult female shot February 2 at San Vicente, Uruguay, and<br />
another taken March 6 at Guamini, Buenos Aires, were molting<br />
the feathers of the forepart of the body and the neck. The primaries<br />
were fresh and unworn and appear to have been newly grown.