FAMILY TIIRAUPIDAK 



479 



Brit. Orn. Club, 1977, p. 65) weighed 29.5 g. When by themselves, 

 Grey-headed Tanagers are usually found singly, in pairs, or with their 

 full-grown young. E. A. Goldman noted that these birds often cling- 

 to the sides of upright stems a few meters over the ground, but also 

 alight 5 to 7 m from the ground. Skutch ( Pac. Coast Avif. no. 31, 1954, 

 pp. 183-184) describes the song as "long-continued, complex in form, 

 always sweet and appealing. . . . delivered in a modest, subdued voice. 

 Whichis whichis whichcery whichis whichit . . ." The male may sing- 

 while following army ants or may move to the middle elevations of the 

 taller trees to deliver the song. Calls include various soft and hard chip 

 notes. 



EUCOMETIS PENICILLATA STICTOTHORAX Berlepsch 



Eucometis spodoccphala stictothorax Berlepsch, 1888, Auk, 5, pp. 451-452. (Chiri- 

 qin, Panama.) 



Characters. — Crown dark gray; throat solid gray; breast slightly 

 streaked with gray. 



A male collected at El Volcan, Chiriqui, on March 23, 1965, had the 

 iris bright reddish brown; bill black, tarsus light brown; toes grayish 

 brown; claws dull slate. 



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

 86.0-94.5 (89.5), tail 73.8-81.2 (76.8), culmen from base 16.2-18.6 

 (17.1), tarsus 20.3-22.8 (21.3) mm. 



Females (10 from Panama and Costa Rica), wing 83.0-92.5 (86.3), 

 tail 70.3-78.3 (74.2), culmen from base 16.0-18.4 (16.9), tarsus 20.3- 

 22.3 (21.3) mm. 



Resident. Uncommon in lowlands and foothills of Chiriqui and 

 Veraguas as far as Santa Fe, where Arce collected it (Salvin, Proc. 

 Zool. Soc. London, 1867, p. 139) and the western Azuero Peninsula, 

 where Aldrich and Bole (Scient. Publ. Cleveland Mus. Nat. Hist., vol. 

 7, 1937, p. 24) found it uncommon in semi-deciduous coastal forest 

 near Monti jo Bay. In the highlands of Chiriqui it has been collected 

 up to 1620 m on the Volcan de Chiriqui (Blake, Fieldiana: Zool., vol. 

 36, no. 5, 1958, p. 568) ; at Boquete, W. W. Brown, Jr., took 4 between 

 1200 and 1440 m (Bangs, Proc. New England Zool. Club, vol. 3, 1902, 

 p. 66) . This race is also found in adjacent southwestern Costa Rica. 



I collected a laying female at Sona, Veraguas, on June 4, 1953, and 

 found an immature in full juvenal plumage there 9 days later. Skutch 

 (Pac. Coast Avif. no. 31, 1954, pp. 184-188) has studied its nesting in 

 detail in Costa Rica, where the breeding season is from March to 

 August. The nest is built by both members of the pair; it is a thin- 



