. The birds of the Republic of Panama. Birds. FAMILY VIREONIDAE 199 musical, whistled phrases, each repeated for many minutes, until a new phrase is taken up and repeated, the entire performance lasting for hours. There is great variety in the total series of songs. Where it occurs in tall forest, the peppershrike often forages up high. In Costa Rica, Skutch (Publ. Nuttall Orn. Club, no. 7, 1967, p. 124) several times observed peppershrikes feeding on fat caterpillars, which were held beneath one foot while pieces were torn off and swal- lowed, a habit shared with shrike-vireos and true vireos
. The birds of the Republic of Panama. Birds. FAMILY VIREONIDAE 199 musical, whistled phrases, each repeated for many minutes, until a new phrase is taken up and repeated, the entire performance lasting for hours. There is great variety in the total series of songs. Where it occurs in tall forest, the peppershrike often forages up high. In Costa Rica, Skutch (Publ. Nuttall Orn. Club, no. 7, 1967, p. 124) several times observed peppershrikes feeding on fat caterpillars, which were held beneath one foot while pieces were torn off and swal- lowed, a habit shared with shrike-vireos and true vireos. The nest is likewise similar to that of the true vireos; the highest one Skutch found was 9 m from the ground—although the birds foraged much higher in the surrounding trees—a cup hung by its rim from a forked branch, in typical vireo fashion. Figure 18.—Rufous-browed Peppershrike, Pajaro Perico, Cyclarhis gujanensis. The characters of each race found in Panama are given below, but it should be added that some forms intergrade; 2 birds from Aguadulce and El Potrero, Code, are intermediate between C. g. flarens and perry- goi in the extent of yellow on the undersurface. On May 29-31, 1971, Eisenmann (in litt.) saw 2 or 3 individuals singing at Playa Coronado, western Province of Panama, in tall, planted trees, and a pair on visits on January 31, 1973, and March 27, 1974. On earlier visits during the 1940's to 1960's when the natural vegetation was scrubby and planted trees were much younger and lower, he did not notice this species. The song resembled those heard in the western Chiriqui highlands. N. G. Smith told Eisenmann that he had. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Wetmore, Alexander, 1886-1978. Washington : Smithsonian Institution
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Keywords: ., bookcentury1900, bookpublisherwashingtonsmiths, booksubjectbirds
