l6o BIRDS OF THE REPUBLIC OF PANAMA PART 2 



calls heard at night near Armila, San Bias, were unfamiliar, and may 

 have come from this owl. 



Two subspecies are found on the Isthmus, one in the west, and the 

 other in the east. 



In South America, the crested owl ranges through Colombia to 

 eastern Ecuador, and from the Guianas to the Amazon Valley in 

 Brazil. The Penards (Vog. Guyana, vol. 1, 1908, p. 462) say that it 

 nests in hollows in trees. Schonwetter (Handb. Ool., pt. 10, 1964, 

 p. 611) gives variation in size in 6 eggs in the typical race as follows : 

 43.7-48.5 X 37.2-38.6 mm. 



LOPHOSTRIX CRISTATA STRICKLANDI Sclater and Salvin 



Lophostrix stricklandi P. L. Sclater and O. Salvin, Ibis, vol. 1, July 1859, p. 221. 

 (Verapaz, Guatemala.) 



Characters. — General coloration somewhat lighter, with white in the 

 scapular area more extensive; superciliary streak and the feather 

 horns mixed more with darker colors, with white less extensive. 



Van Rossem (Dickey and van Rossem, Birds El Salvador, 1938, p. 

 230) records the colors in one taken on Cerro Cacaguatique, El Salva- 

 dor, as follows : "Iris reddish brown ; cere grayish olive ; feet pale 

 flesh color ; claws black terminally, horn color at base ; bill black with 

 ridge of culmen and tip, and mandible from angle of gonys to tip, 

 flesh color." 



Eye color may be variable as Heyde and Lux on the label of a fe- 

 male taken at Nata, Code, note it as yellow, and Salvin and Godman 

 (Biol. Centr.-Amer., Aves, vol. 3, 1897, p. 14) says that the iris was 

 bright yellow in 2 from Guatemala. 



Measurements. — Males (6 from Nicaragua, Costa Rica, and Pa- 

 nama), wing 278-292 (284.5), tail 159-179 (167.1), culmen from cere 

 18.0-19.5 (18.5), tarsus 43.0-48.4 (45.3) mm. 



Females (6 from Chiapas, Costa Rica, and Panama), wing 280-292 

 (287.6), tail 167-180 (174.1), culmen from cere 18.0-20.0 (18.9), 

 tarsus 47.9-50.6 (48.9) mm. 



Resident. Rare in forested areas, in western Panama. Recorded 

 from Chiriqui (Divala, Bugaba) ; Veraguas (Zapotillo, Santa Fe) ; 

 Code (Nata) ; Bocas del Toro (Rio Cricamola). 



The record for Zapotillo is of a female that W. M. Perrygo and I 

 collected on May 19, 1953. The specimen from Nata, Code, is a fe- 



