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BIRDS OF THE REPUBLIC OF PANAMA PART 4 



[VERMIVORA RUFICAPILLA (Wilson): Nashville Warbler, 

 Reinita Cabecigris 



Sylvia ruficapilla Wilson, 1811, Amer. Ornith., 3, p. 120, pi. 27, fig. 3. (Near 

 Nashville, Tennessee.) 



An individual of this species was reported seen at Santa Clara, Chiri- 

 qui, on January 2, 1980, by P. E. Donohue and J. Van Os (Ridgely, in 

 litt.). The normal winter range is from southern Texas and Mexico 

 to Guatemala.] 



VERMIVORA GUTTURALIS (Cabanis): Flame-throated Warbler, 

 Reinita Gargantirroja 



Compsothlypis gutturalis Cabanis, 1860, Journ. f. Ornith., 8, p. 329. (Irazu, Costa 

 Rica.) 



Small; throat and breast bright orange; upper surface gray with 

 black triangular patch on back. 



Description. — Length 106-116 mm. Adult (sexes alike), entire up- 

 per surface slate gray except for black triangular patch on upper back; 

 primaries blackish with outer web narrowly edged slate gray; secon- 

 daries blackish on inner web, slate gray on outer web; rectrices blackish 

 with outer web edged slate gray; lores and side of face blackish; throat 

 and breast rich orange to cadmium orange (sometimes almost flame 

 scarlet) flanks light gray; rest of under surface white. 



Juvenile, upper surface olive-gray with blackish triangular patch on 

 back; wings and tail dusky, with narrow buffy tips to upper wing co- 

 verts; lores and face dusky; narrow, buff postocular stripe; chin and 

 throat orange-yellow, fading to buff on abdomen. 



A female taken March 2, 1965, at Volcan de Chiriqui, Chiriqui, had 

 the iris dark brown; base of gonys and lower margin of mandibular 

 rami dull orange-yellow; rest of bill black; tarsus and toes dull mouse 

 brown; claws somewhat darker brown. 



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

 61.4-65.1 (63.2), tail 43.6-52.0 (47.6), culmen from base 12.3-13.8 

 (13.0), tarsus 16.2-18.1 (17.3) mm. 



Females (10 from Chiriqui and Costa Rica), wing 57.0-65.0 (60.4), 

 tail 42.8-50.7 (46.2), culmen from base 10.6-13.1 (12.4), tarsus 16.0- 

 17.6 (16.8) mm. 



Resident. Fairly common in forest and forest borders of western 

 Chiriqui (Volcan de Chiriqui, Cerro Punta, and Boquete), where it 

 has been collected between 1560 and 3090 m (Blake, Fieldiana: Zool., 

 vol. 36, no. 5, 1958, pp. 557-558). Of the specimens collected by Mon- 

 niche at the elevations given by Blake, "well over half" were taken be- 



