5l8 BIRDS OF THE REPUBLIC OF PANAMA PART 3 



iris dark wood brown ; maxilla black ; extreme tip of mandible mouse 

 brown ; line along gonys dull wood brown, shading on either side to 

 the black of rest of the mandible ; tarsus and toes dusky neutral gray. 

 A female, at Charco del Toro, Panama. March 21, 1950, had the iris 

 dark brown ; bill black above, dark neutral gray below, with a line of 

 light neutral gray along the inner margin of the gonydeal rami ; tarsus 

 and toes light neutral gray ; claws black. Another female, from Pucro, 

 Darien, February 6, 1964, also had the iris dark brown ; bill wholly 

 black ; tarsus and toes dusky neutral gray. 



Measurements. — Male (10 from Costa Rica, Panama, and north- 

 western Colombia), wing 38.2-39.9 (38.9), tail 24.0-26.8 (25.1), 

 culmen from base 12.8-13.8 (13.2), tarsus 14.0-15.2 (14.7) mm. 



Females (10 from Panama and northwestern Colombia), wing 

 36.3-39.3 (37.7), tail 22.8-25.2 (24.0), culmen from base 12.3-13.5 

 (13.0), tarsus 13.7-15.4 (14.5) mm. 



Resident. Found in forested areas in the Tropical Zone ; recorded 

 on the Pacific slope from the southern Canal Zone east through 

 eastern Province of Panama and Darien ; on the Caribbean side from 

 Bocas del Toro to northern Code, Canal Zone, and eastern Colon. 



Both Benson and Austin Smith collected this species near Almirante, 

 and the latter secured a male at Chiriqui Grande (in the Havemeyer 

 collection at Yale, labeled "Chiriquicito Grande"). February 14, 1958, 

 I took a male on Shepherd Creek, below Almirante. I collected 

 another February 27, 1952, near El Uracillo, northern Code, on the 

 upper Rio Indio. Eisenmann recorded it near Pifia in the northwest- 

 ern border of the Canal Zone. Early records were made by Mc- 

 Leannan at Lion Hill. Ridgely recorded it at Rio Piedras, eastern 

 Province of Colon, in January 1968. In the southern Canal Zone, 

 Eisenmann and N.G. Smith found it on the K-6 road July 13, 1964. 

 To the eastward, I secured one March 23, 1961, on the Rio Santo east 

 of Pacora in the upper La Jagua area. At Pucro, near the Rio Pucro, 

 Darien in 1964, I collected a female February 6 and a pair February 7. 



Although these are forest birds, they come out regularly into 

 brushy areas that are more open. I found one in an old banana 

 plantation, another in low trees along a trail at the border of a weed- 

 grown pasture, and another in a low tree top covered with vines at 

 forest border. Near Pucro one came into shade trees over a cacao 

 plantation. On another occasion a pair rested side by side on an open 

 branch in gallery forest. One fluttered out to another perch for a 

 few seconds, and then returned to the side of its mate. It is probable 

 that they are more common than these few records indicate, as their 

 tiny size renders them inconspicuous. 



