FAMILY CAPRIMULGIDAE 2IO, 



the northern winter it is found regularly south to El Salvador and 

 Honduras and has been reported casually south to Costa Rica, where 

 Slud (Bull. Amer. Mus. Nat. Hist., vol. 128, 1964, p. 138) lists 4 

 specimens. The record from Chiriqui is the first from Panama. The 

 locality is about 100 kilometers east-southeast of El Pozo del Rio 

 Terraba, the most southern point at which the bird has been found in 

 Costa Rica. 



CAPRIMULGUS SATURATUS (Salvin) : Dusky Nightjar, 

 Dormilon Serrano 



Antrostomus saturatus Salvin, Proc. Zool. Soc. London, November 1870, p. 203. 

 (Southern slope of Volcan de Chiriqui, Chiriqui, Panama.) 



Size small, very dark, without prominent light bands on hind or 

 foreneck. 



Description. — Length 210-225 mm. Male, above sooty black, 

 marked rather finely with cinnamon-rufous spots, that in part unite 

 to form narrow, irregular bars ; lores largely cinnamon-rufous ; scapu- 

 lars spotted prominently with black, the sides whitish, the markings 

 more or less concealed ; outer web of primaries spotted, and secondaries 

 barred, with cinnamon-rufous ; central tail feathers with indefinite 

 bars of cinnamon-rufous ; 3 outermost tipped broadly with white, 

 with the rufous barring restricted ; foreneck with an indefinite, partly 

 hidden, very narrow band of white and buff; rest of foreneck and 

 breast like back, but with a few scattered spots of white; extreme 

 lower breast and abdomen cinnamon-buff to buff, barred narrowly 

 with black ; under tail coverts buff, with fewer black bars ; under wing 

 coverts black, with a very few cinnamon-buff spots. 



Female, with cinnamon-buff markings larger, so that this color is 

 predominant ; light tips on tail narrower, in color buff. 



Iris dark brown ; commissure dull light brown, rest of bill black ; 

 tarsus mouse brown ; toes and claws dull black (with all tarsal and toe 

 scutes outlined in dull white) . 



Measurements. — Males (14 from Costa Rica and Panama), wing 

 149.5-159 (153.9), tail 100.1-119.8 (112.4), tarsus 14.0-17.1 (15.2) 

 mm. 



Females (11 from Costa Rica and Panama), wing 149.3-159.0 

 (153.9) tail 104.4-120.5 (113.1), tarsus 15.2-16.5 (16.0) mm. 



Resident on the higher slopes of Volcan Baru, Chiriqui. Recorded 

 from 2,000 to 3,100 meters. 



This dark-colored whip-poor-will was described from a male taken 

 by Enrique Arce in 1870 on the "southern slope of the Volcano of 



