Bulletin - United States National Museum - si-pddr - Smithsonian ...
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Bulletin - United States National Museum - si-pddr - Smithsonian ...

Bulletin - United States National Museum - si-pddr - Smithsonian ... Bulletin - United States National Museum - si-pddr - Smithsonian ...

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28 BULLETIN 133^ UNITED STATES NATIONAL MUSEUM I was astonished to hear the low whistle of the martineta and to catch sight of an occasional crested bird as it ran aside through the weeds. Others were noted in this same region on December 18. It was said that the martineta was encroaching sloAvly on the range of Rhynchotus rufescens in southern Buenos Aires, and that as Calopezus came in it drove out and replaced the rufous-winged bird. Barrows ° in 1881 recorded Calopezus only from the neighborhood of Bahia Blanca, though he covered the region to the northward as far as Carhue and Puan, so that there may be something in the belief that the species is extending its range. Carhue is situated in west central Buenos Aires, a point within the more watered section of the eastern pampas. No specimens of crested tinamou were secured here, so that these notes are placed questionably under the subspecies elegans. The form known as morenoi which occurs in western Pampa was found in more arid country, though the eastern limit of its range is not known. On December 15 a copeton, as the birds were known locally, flushed with a startled note direct from a nest containing three beautiful eggs. The nest was a slight hollow scratched out under the lee of a low hillock of earth in ground partly bare of vege- tation, though a fringe of grasses partly overhung the nest cavity. A few bits of grass stems carelessly arranged formed an attempt at nest lining, but lay at one side where they were no protection to the eggs. The whole formed as crude and carelessly constructed a nest as I have seen, save among such groups as shore birds and goatsuckers. Tlie eggs have the usual shining glasslike surface and vary in color from cosse to calliste green. One has the side discolored to a light yellowish olive. They measure as follows: 51.9 by 40.5, 51.9 by 38.9, 51.7 by 38.5 mm. (PL 8.) Many Calopezus were offered for sale in the markets of Buenos Aires during winter. Those examined were in part at least of the typical subspecies. It is probable, however, that the forms marketed there include the western and northern subspecies as well. CALOPEZUS ELEGANS MORENOI Chubb Calopezus elegans morenoi Chubb, Bull. Brit. Orn. Club, vol. 38, Dec. 12, 1917, p. 31. (Neuquen, Argentina.) Adult females of the crested tinamou were taken at General Roca, Rio Negro, Argentina, on November 25 and 26, 1920, and males on December 2 and 3. A chick not more than 2 days old was collected on December 3. An immature female about half grown was taken December 27 near Victorica, Territory of Pampa, and an adult female with a nearly grown male at Tunuyan, Province of Mendoza, on » Auk, vol. 1, 1884, p. 318.

U. S. NATIONAL MUSEUM BULLETIN 133 PL 8 Plumes of the Pampas Grass Guamini, Buenos Aires, March 3, 1921 A^# L-'A*** Nest and Eggs of Crested Tinamou (Calopezus e. elegans) Carhue Buenos Aires, December 15, 1920

U. S. NATIONAL MUSEUM BULLETIN 133 PL 8<br />

Plumes of the Pampas Grass<br />

Guamini, Buenos Aires, March 3, 1921<br />

A^#<br />

L-'A***<br />

Nest and Eggs of Crested Tinamou (Calopezus e. elegans)<br />

Carhue Buenos Aires, December 15, 1920

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