Il6 BIRDS OF THE REPUBLIC OF PANAMA — PART 2 



substantiate Shelley's statement. The inclusion of Panama in the 

 range has no basis.] 



PIAYA CAYANA THERMOPHILA Sclater: Squirrel Cuckoo, 

 Pajaro Ardilla 



Figure 14 



Piaya thermophila P. L. Sclater, Proc. Zool. Soc. London, 1859 (February 1860), 



p. 368. (Jalapa, Veracruz, Mexico.) 

 Piaya cayana incincta Griscom, Bull. Mus. Comp. Zool., vol. 72, January 1932, 



p. 324. (Perme, San Bias, Panama.) 



A large, slender cuckoo with long tail, and bright brown upper sur- 

 face. 



Description. — Length 400-460 mm. Adult (sexes alike), above 

 chestnut to rufous-chestnut, usually paler on the head ; wings tipped 

 with grayish brown ; each feather in the tail tipped with white, and 

 with a subterminal black bar ; f oreneck and upper breast vinaceous- 

 cinnamon ; lower abdomen, flanks, and under tail coverts slate to 

 slaty black, varying in depth of color ; rest of lower surface gray ; 

 under wing coverts light gray ; rest of under side of wing cinnamon- 

 buff. 



Immature, central tail feathers without black subterminal bar, and 

 with white tip less in extent. 



An adult male, shot March 6, 1961, near the Candelaria Hydro- 

 graphic Station, Panama, had the iris dark red; basal half of maxilla 

 behind the middle of the nostril, gape, mandibular rami, and bare skin 

 around eye dull green; anterior part of bill, including the maxilla in 

 front of the nostril, and the mandible, except on the base of the rami, 

 greenish yellow ; inside of mouth black, except for the anterior third 

 where the inner surface of both maxilla and mandible are yellowish 

 green ; tarsus dark neutral gray, with each scute margined narrowly 

 with dull white ; scutes on toes, and claws dull black. 



A female taken January 24, 1962, at Guanico Arriba, Los Santos, 

 had the iris bright red. 



Measurements. — Males (10 from Panama), wing 138.2-147.8 

 (142.5), tail 237-279 (257), culmen from base 30.5-34.1 (32.1), tar- 

 sus 33.7-37.5 (36.2) mm. 



Females (10 from Panama), wing 133.1-145.8 (140.0), tail 238- 

 277 (253), culmen from base 30.5-33.5 (31.6), tarsus 34.1-37.4 

 (35.8) mm. 



Resident. Found throughout both slopes of the mainland, commonly 

 in the Tropical Zone, ranging up into the Subtropical Zone. 



