276 



BIRDS OF THE REPUBLIC OF PANAMA PART 4 



on outer web replaced by light bluish olive-green; lores, superciliary, 

 and entire undersurface white, extensively tinged pale dull yellow; 

 underwing coverts white. 



Measurements. — Males (10 from the breeding range, taken in 

 May), wing 62.5-69.5 (66.2), tail 40.5-45.5 (43.3), oilmen from base 

 10.3-12.4 (11.3), tarsus 14.8-16.7 (15.9) mm. 



Females (10 from the breeding range, taken in May), wing 61.0- 

 65.0 (62.6), tail 39.9-44.1 (41.7), culmen from base 10.2-11.9 (11.2), 

 tarsus 14.5-16.6 (15.8) mm. 



Migrant from the north. Uncommon. While this species winters in 

 South America from Colombia and Venezuela south to Bolivia, and 

 undoubtedly passes in part through Panama, I have seen only 7 speci- 

 mens. The species is, however, hard to collect and passes through Pan- 

 ama very quickly. The British Museum has 2 skins from Calovevora, 

 Veraguas, taken by Arce, and 3 others attributed to McLeannan, and 

 therefore taken in the Canal Zone. One in the American Museum of 

 Natural History is also from McLeannan. There is 1 in the Museum 

 of Comparative Zoology collected on Isla del Rey (San Miguel), 

 March 15, 1904, and 1 in the Smithsonian that Perrygo and I collected 

 on Taboga Island, March 23, 1952. 



Ridgely (1976, p. 296) considers the Cerulean Warbler an "uncom- 

 mon fall and rare spring transient (late August-early October; mid-to 

 late March; one report from November 4) . . . Only winter report is a 

 sighting of a male on Cerro Campana on January 1, 1969 (Ridgely). 

 . . . Usually arrives in small 'waves' in September when small groups 

 may be encountered." In early April 1976 Ridgely (in litt.) recorded 

 1 to 3 individuals per day at three different localities in the Canal Zone, 

 with the maximum being 3 (2 males and a female) on the Pipeline Road 

 on April 3. Extreme dates known to Eisenmann are August 20, 27, and 

 April 3, 14. 



DENDROICA FUSCA (Miiller): Blackburnian Warbler, 

 Reinita Gargantianaranjada 



Motacilla fusca P.L.S. Miiller, 1776, Natursyst., suppl., p. 175. (French Guiana.) 



Small; upper surface mainly black (grayish olive in female); throat 

 and breast bright orange. 



Description. — Length 106-120 mm. Adult male, upper surface black, 

 with small light orange patch in center of crown and two yellowish 

 white stripes on back; wings black, with middle coverts broadly and 

 greater coverts narrowly tipped white, forming a patch; primaries and 



