FAMILY TROGONIDAE 417 



119.0 (117.7), culmen from base 16.4-17.6 (16.9), tarsus 13.0-13.9 

 (13.6) mm. 



Resident. Fairly common in more open forested areas throughout 

 the tropical lowlands on both Pacific and Atlantic slopes. To 1,200 

 meters near Santa Clara, and 1,280 meters near the base of Cerro 

 Pando, in Chiriqui ; to 600 meters on Cerro Azul, Province of Panama. 



Salvin (Proc. Zool. Soc. London, 1867, p. 151) cites this species in 

 collections made by Arce near Santa Fe, Veraguas, the only report to 

 date from that area. The specimen, a male, now in the British Museum 

 has Arce's original label attached so that the record seems valid. Spec- 

 imens recorded by Bangs and Barbour (Bull. Mus. Comp. Zool., vol. 

 65, 1922, p. 203) from Cerro Sapo, Darien, are from near 450 meters 

 elevation. The species ranges on the headwaters of the Rio Tacarcuna 

 in eastern Darien to 575 meters. 



While in general the gartered trogon has the same broad geograph- 

 ical distribution as the graceful trogon (Trogon rufus tenellus), the 

 latter species is an inhabitant of the denser forests, while the present 

 bird ranges in the trees along streams, at the forest edge, the borders 

 of clearings, and similar more open cover. In early morning I have 

 seen them resting in the sun in the open tops of guarumos. They are 

 found regularly in pairs. The yellow eyelid of the male shows clearly 

 in life, an excellent mark for field identification. 



The usual call is a repetition of a single note, repeated steadily, 

 with increasing rapidity toward the end, in sound like the Massena 

 and long-tailed trogons, but less loud, and higher in pitch. It, thus, 

 is quite different from the whistled notes of the graceful trogon 

 of similar size. 



The nest may be in a cavity in a decaying tree stump, or may be 

 excavated in a termite nest. Near Almirante one pair had made an 

 opening in the upper end of a huge wasp's nest 20 meters from the 

 ground in an open-limbed tree. As I watched the birds the male 

 clung at the entrance, undisturbed by the wasps, while the female 

 rested quietly on a branch a few meters away. Skutch (Auk, 1956, 

 p. 357) has found the closely related bird of Costa Rica using similar 

 situations. Near Chepo, on April 10, 1949, a pair had cut a hole in 

 a termitarium located 10 meters from the ground in a tree standing 

 in open forest. An egg in the British Museum from Cachi, Costa 

 Rica, of the intermediate population between concinnus and the 

 slightly larger subspecies braccatus, in color dull white, with faint 

 gloss, in form oval, measures 29.2 X 22.6 mm. 



One shot at El Llano had a large orthopteran in the stomach. One 



