I/O BIRDS OF THE REPUBLIC OF PANAMA PART 3 



Rio Guabal in northern Code in 1962, and earlier (1952) had 

 found it along the Rio Indio in western Province of Colon. Here it 

 ranged inland to El Uracillo in the Caribbean extension of Code. 

 In the Canal Zone it has been especially common on Barro Colorado 

 Island where nests with eggs have been recorded in mid-January and 

 late October. 



The only reports from the Pacific slope are from Cerro Campana 

 in western Province of Panama where I secured a male March 19, 

 1951, in wet forest at 900 meters, near the summit of the mountain, 

 and Chorrera, where Richardson secured a pair November 5 and 6, 

 1914 (specimens in American Museum). 



The inclusion by Salvin and Godman (Biol. Centr.-Amer., Aves, 

 vol. 2, 1892, p. 210) of "Veraguas (Arce)" in their range for this 

 bird is uncertain. Possibly it refers to Sclater (Cat. Birds Brit. Mus., 

 vol. 15, 1890, p. 234) who in the list of specimens in the British 

 Museum lists "J* ad. sk. Veragua (Arce) Salvin-Godman Coll." This 

 report, from present information, has no validity. 



On Barro Colorado Island, Eisenmann (Smithsonian Misc. Coll., 

 vol. 117, no. 5, 1952, p. 35) lists nests with eggs found by Skutch, 

 January 14, 1931, and March 29, 1935, and by Allen, October 20, 

 1944. 



Skutch (Pac. Coast Avif., no. 35, 1969, pp. 219-221) observed 

 two males in display perched facing one another on twigs in the 

 undergrowth. With lowered heads and fluffed out plumage of their 

 backs, they turned from side to side, rapidly and incessantly repeating 

 sharp, squeaky notes. They continued this performance for many 

 minutes, without changing their perches until one flew away and 

 the other continued calling. During this display several females 

 flitted around them, taking no part in the dispute. 



Two nests seen were deep pouches with narrowed tops suspended 

 "from a fork at the end of a slender drooping branch in undergrowth 

 in forest" a little less than 2 meters above the ground. They were 

 "composed of fibrous materials and partly decayed leaves, with an 

 inner layer of dead leaves and a lining of fine fibers in the bottom." 

 The two eggs were white, finely spotted, and lined with pale lilac 

 that formed a wreath on the large end. One set measured 18.3 X 13.5, 

 and 17.5 X 13.5 mm. Both sexes worked at nest construction and also 

 shared in incubation. 



The eggs described as of this race by Carriker (Ann. Carnegie 

 Mus., vol. 6, 1910, p. 608) with measurements of 20.3x14.8 and 

 22.5 X 15.5 mm appear large to be of this bird. 



