lOO BIRDS OF THE REPUBLIC OF PANAMA PART 3 



ular rami ; tarsus and toes light greenish gray ; claws light fuscous- 

 hrown. A male from the Rio Tacarcuna, Darien, at 575 meters eleva- 

 tion, had the iris light brown ; the bare skin of the eyelid pale green ; 

 maxilla fuscous, paler on the sides toward the tip ; mandible pale dull 

 yellowish green ; tarsus dull greenish brown ; toes pale dull green ; 

 claws neutral gray. 



A female collected January 17, 1961, at Juan Mina, Canal Zone, 

 had the iris dark brown ; bare skin around eye light greenish buff ; 

 culmen from tip to level of nostrils fuscous-black ; rest, including 

 the sides at the base and the mandible mouse brown ; mandibular 

 rami dull honey yellow ; tarsus and toes greenish gray ; pads on under 

 side of toes tinged with yellow ; claws brownish gray. 



Measurements. — Males (10 from Colon to Darien), wing 86.8- 

 93.2 (89.9), tail 69.8-78.4 (74.0), culmen from base 23.7-25.5 (24.3), 

 tarsus 23.2-24.7 (23.7) mm. 



Females (10 from northern Code to San Bias and Darien), wing 

 82.0-89.0 (86.3), tail 68.4-79.9 (72.0), culmen from base 22.3-25.0 

 (23.8), tarsus 22.4-23.5 (22.7) mm. 



Resident. Fairly common in forested areas on the Pacific slope in 

 eastern Veraguas (Calobre, Chitra) and from the Cerro Azul east 

 through Darien; on the Caribbean side from northern Code (head 

 of Rio Code del Norte, El Uracillo) and western Colon, northern 

 Canal Zone, and eastern San Bias to the Colombian boundary ( Puerto 

 Obaldia). 



Beyond Panama this race is found widely through northern and 

 western Colombia to northwestern Ecuador. 



This is the most widely distributed form of this species in the 

 Republic, found wherever there is suitable forest. On the Pacific 

 side there are records for the foothill area of eastern Veraguas, and 

 then it appears on the slopes of Cerro Azul, reaches the lowlands on 

 the lower Rio Bayano (San Antonio) and ranges eastward from 

 the lower Rio Chiman through Darien, mainly in the hill region in- 

 land. On the Caribbean side it is recorded from western Colon and 

 northern Code eastward through the Chagres Valley and the San 

 Bias. 



They are mainly birds of the heavier undergrowth, that move about 

 behind cover of leaves, though in feeding they may range upward 

 into the lower tree crown. They move actively, but usually secretively 

 through the leaves or searching the larger limbs, clinging often 

 suspended sidewise or head down, supported by the strong, long 

 toes. Clusters of dead leaves and other plant materials hanging in 



