FAMILY VIREONIDAE 



211 



VIREO CARMIOLI Baird: Yellow- winged Vireo, Vireo Aliamarillo 



Figure 20 



Vireo carmioli Baird, 1866, Rev. Amer. Birds, 1, p. 356. (Dota [ = Santa Maria 

 de Dota], San Jose, Costa Rica.) 



Small; upper surface olive-green, with short yellowish eye stripe 

 and broad yellowish wing bars; throat whitish, rest of undersurface 

 yellowish. 



Description. — Length 109-116 mm. Adult (sexes alike), upper sur- 

 face plain greenish olive; short, pale yellowish stripe from upper part 

 of base of maxilla past eye, and yellowish border of lower rim of eye, 

 forming a partial eye-ring; spot between lower part of base of maxilla 

 and front of eye dark gray; sides of head yellowish olive; wing dusky 

 with tips of middle and greater coverts tipped yellowish, forming two 

 wing bars, outer web of primaries and secondaries edged yellowish 

 olive, and outer web of tertials edged yellowish white; tail black, 

 feathers edged yellowish olive; throat whitish, tinged with olive yellow- 

 ish; rest of undersurface light yellow tinged with olive on breast and 

 sides; underwing coverts light yellow; inner edge of underside of pri- 

 maries and secondaries white. 



Immature, like adult but head and nape dark cinnamon. 



A male taken February 24, 1965, at Volcan de Chiriqui, Chiriqui, 

 had the iris reddish brown; maxilla and tip of mandible dull black; 

 base of mandible dark neutral gray; tarsus, toes, and claws bluish 

 neutral gray. 



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

 64.0-67.5 (65.3), tail 44.7-49.6 (47.1), culmen from base 9.2-11.2 

 (10.4), tarsus 16.9-18.6 (18.1) mm. 



Females (5 from Chiriqui and Costa Rica), wing 59.5-64.0 (62.0), 

 tail 45.1-47.8 (46.6), culmen from base 9.9-10.5 (10.3, average of 4), 

 tarsus 16.7-17.8 (17.3) mm. 



Resident. Fairly common in western Chiriqui in very humid forest, 

 chiefly between 2000-2670 m, although recorded from 900 to 3170 m. 

 Resident also in Costa Rica. W. W. Brown, Jr., collected a male at 

 Boquete (1350 m) on March 17, 1901 (Bangs, Proc. New England 

 Zool. Club, vol. 3, 1902, p. 59), but most of the localities from which 

 this bird is known are higher — Blake (Fieldiana: Zool., vol. 36, no. 5, 

 1958, p. 553), for example, reported them collected by Monniche at six 

 localities around Volcan de Chiriqui on the Boquete side between 1590 

 and 2850 m. Two birds collected by Frank A. Hartman at Cerro 



