8 BIRDS OF THE REPUBLIC OF PANAMA PART 3 



centrally ; back and wing coverts dull brown ; rump paler, more 

 rufous ; upper tail coverts and tail deep cinnamon-rufous, the latter 

 with the shafts black ; primaries and secondaries centrally tawny, 

 with the tips dusky ; an indistinct line above the eye pale tawny ; side 

 of head sooty brown, streaked behind the eye, and spotted on malar 

 area with dull cinnamon-buff ; lores dull grayish buff, tipped with 

 dusky ; chin and throat buff ; f oreneck dusky brown streaked lightly 

 with cinnamon-buff; rest of under surface light umber-brown, be- 

 coming cinnamomeus on abdomen ; under tail coverts and under 

 wing coverts cinnamon-rufous. 



A male, collected at Puerto Armuelles, Chiriqui, February 5, 1966, 

 had the iris mouse brown ; maxilla and side of mandible fuscous- 

 black ; lower surface of mandible neutral gray ; tarsus and toes dull 

 gray ; claws fuscous-black. 



Measurements. — Males (10 from Chiriqui and Costa Rica), wing 

 98.1-102.3 (99.9). tail 74.2-82.6 (77.9). culmen from base 24.1-27.0 

 (25.3), tarsus 23.8-24.9 (24.5) mm. 



Females (10 from Chiriqui and Costa Rica), wing 91.0-99.4 

 (95.9), tail 70.0-76.5 (71.9), culmen from base 22.8-25.8 (24.4, 

 average of 9 ) . tarsus 22.0-24.6 (23.3) mm. 



Resident. Found locally in small number in the tropical lowlands 

 of western Chiriqui (Puerto Armuelles, Alanje, Divala, Bugaba) 

 less often ranging higher to 1250 meters (Barriles and near El 

 Volcan ) . 



In Panama this bird is known only from western Chiriqui, where it 

 was first recorded by Salvin (Proc. Zool. Soc. London, 1870, p. 192) 

 from a specimen collected by Arce at Bugaba in 1869. The next re- 

 port, by Bangs (Auk, 1901, p. 367) recorded three males taken by 

 W. W. Brown. Jr., at Divala. Mrs. M. E. Davidson secured two 

 males at Puerto Armuelles on November 19, 1929, and one at 

 Barriles, January 20, 1931. Another specimen from the higher coun- 

 try was taken by Dr. F. A. Hartman near El Volcan, February 10, 

 1953. 



In the level land below Alanje, on March 8, 1960, I found one in a 

 small tract of forest at Guacimo, where it was feeding over an ant 

 swarm. The bird flew down to the ground several times as I watched 

 it, rose immediately, and returned to a low perch, where it shook its 

 feet alternately, apparently to dislodge clinging ants. When I 

 examined its stomach while preparing it as a specimen I found in it 

 remains of earwigs. Another male was collected March 12 nearby 

 in brush along the Rio Escarrea at Canta Gallo, where ants were 

 common, but where I noted no raiding swarms. A few others were 



