350 BIRDS OF THE REPUBLIC OF PANAMA PART 3 



the gape dull honey yellow ; rest of maxilla and tip of mandible dull 

 black ; rest of mandible neutral gray, becoming paler at base ; tarsus 

 and toes neutral gray, with a faint brownish cast. 



Measurements. — Males (10 from Canal Zone, eastern Province of 

 Panama, and Darien), wing 89.0-93.1 (91.0), tail 61.0-66.5 (64.5), 

 culmen from base 16.0-17.7 (16.6), tarsus 21.0-22.8 (22.0) mm. 



Females (10 from Canal Zone, eastern Province of Panama, and 

 Darien), wing 87.0-90.0 (88.6), tail 56.8-62.0 (60.5), culmen from 

 base 15.3-17.7 (16.8), tarsus 21.4-22.9 (21.8) mm. 



Resident. Widely distributed in lowland areas from the western 

 edge of the Canal Zone eastward on the Pacific slope through eastern 

 Province of Panama and Darien to Colombia ; on the Caribbean side, 

 from Barro Colorado Island and eastern Province of Colon (Porto- 

 belo) to eastern San Bias (Perme). 



Dr. Eisenmann informs me that years ago he examined one caught 

 in a mist net on Cerro Campana, western Province of Panama, but 

 did not make full notes on it as the current understanding of sub- 

 species in this bird was then unknown. It is probable that this may 

 have been the race panamensis near its western boundary, but this 

 needs verification. While these birds are not common, there are 

 numerous records from the lower Chagres Valley, near Gamboa, 

 Juan Mina. and Frijoles, and on Barro Colorado Island. Goldman 

 collected a male at Portobelo. Colon, on May 30, 1911. Griscom 

 (Bull. Mus. Comp. Zool., vol. 72, 1932, p. 355) recorded one taken by 

 von Wedel at Perme, San Bias. These two are the only records at 

 present for the eastern Caribbean seaboard. From the adjacent 

 northern end of Choco, Colombia, the National Museum has speci- 

 mens collected by M. A. Carriker, Jr.. in 1949 at Acandi, and in 1950 

 at Unguia. 



In Darien these birds are widely distributed in the valleys of the 

 Chucunaque and Tuira Rivers, also near the coast at Jaque. and inland 

 on the Rio Jaque. In late January and early February 1961, I found 

 them fairly common at about 475 meters on the base of Cerro Pirre. 

 The race panamensis continues in northwestern Colombia through 

 the valleys of the Rio Sinu and the Rio Cauca (with its tributary 

 the Rio Nechi). A paler race S.f. stenorhynchns replaces it farther 

 east along the lower Rio Magdalena. 



Eisenmann and others have recorded the loud, emphatic call, heard 

 in the Canal Zone, as of four notes, ivcyoo, zvhit-ivhit, wc-o-o-o, the 

 two in the middle short and the last prolonged. 



From examination of stomachs I have found the food to be cater- 

 pillars, cicadas, and small berries. 



