FAMILY CRACIDAE 303 



CHAMAEPETES UNICOLOR Salvin: Black Guan; Pava Negra 



Figure 52 



Chamacpetes unicolor Salvin, Proc. Zool. Soc. London, June 1867, p. 159. 

 (Calovevora, Veraguas, Panama.) 



Breast and abdomen brownish black ; elsewhere black. 



Description. — Length 620 to 690 mm. Adult (sexes alike), three 

 outermost primaries narrowed at the tip, the third from the outside 

 less so than the outer two ; breast, abdomen, and sides fuscous- 

 black, with the feathers edged faintly with olive; elsewhere black 

 with a sheen of greenish olive. 



Immature, outermost primary falcate at tip, second and third from 

 outside narrowed and slightly sinuate at tip; otherwise like adult. 



Male, iris red to reddish brown ; bill black, with a black ring sur- 

 rounding the nostril ; a dark neutral gray line along the center of the 

 cere from the base of the horny maxilla to the feathers; cere else- 

 where light blue, shading into dark violet-blue on the bare lores 

 and side of the face, including the basal half of the mandibular 

 ramus; bare area around eye dusky neutral gray; tarsus and toes 

 light brick red; claws black. 



Female, like male. 



Measurements. — Males (3 from Chiriqui), wing 276-303 (292.3), 

 tail 244-277 (263.6), culmen from cere 18.5-19.6 (19.0), tarsus 

 70.7-74.5 (73.0) mm. 



Females (5 from Chiriqui), wing 275-294 (284), tail 250-260 

 (254), cuhnen from cere 18.0-19.0 (18.4), tarsus 70.9-73.7 (71.8) 

 mm. 



Resident. Uncommon, in the subtropical and upper tropical zones 

 of the mountains of Chiriqui and Bocas del Toro, ranging from 1,500 

 to 2,500 meters, except on the Boquete Trail in Bocas del Toro where 

 it is reported down to 450 meters. 



This interesting species was found first by Arce at Calovevora, 

 on the Caribbean slope of Veraguas beyond Santa Fe, and later in 

 eastern Chiriqui in the Cordillera de Tole. Brown collected males 

 above Boquete in March 1901, and in 1926 Kennard secured several 

 in Bocas del Toro on the trail leading to Boquete from Chiriquicito. 

 Later it was found to be fairly common on slopes above Boquete, 

 where Mrs. Davidson secured males on January 27, 1933, at Quiel, 

 and on Horqueta on February 12, 1934. The Monniche collection 

 included a series taken at Bajo Mono, Lerida, and on the Rio 

 Caldera, and several collected in this same region by Rex Benson in 

 1931 are now in the U. S. National Museum. 



