252 BIRDS OF THE REPUBLIC OF PANAMA PART 4 



Measurements. — Males (10 from New Jersey, taken in May), wing 

 58.3-62.5 (60.1), tail 43.3-47.9 (46.5), oilmen from base 11.3-12.5 

 (11.9), tarsus 16.0-18.0 (17.1) mm. 



Females (10 from New Jersey, taken in May), wing 55.0-59.0 

 (56.6), tail 42.2-46.6 (44.3), culmen from base 10.6-12.7 (11.7), tar- 

 sus 15.9-17.8 (16.8) mm. 



Winter visitor from the north. This species normally winters from 

 southern Mexico south to Nicaragua; in Panama it is a rare visitant 

 infrequently recorded in the western Caribbean lowlands, both slopes 

 of the Canal Zone, where it was first recorded on December 30, 1942, 

 at Cano Saddle on the northwestern shore of Gatun Lake (Imhof, Auk, 

 1950, p. 256), and in the Province of Panama as far east as Chepo, 

 where it has been collected once, March 7, 1927 (Griscom, Auk, 1933, 

 p. 306) . The Smithsonian has a specimen collected at Almirante, Bocas 

 del Toro, on January 17, 1961. The Blue-winged Warbler has been 

 found in Panama between mid-October and late March. An individual 

 of the hybrid form known as "Brewster's Warbler" was seen at Vol- 

 can Lakes, Chiriqui, on January 13, 1977, by A. Greensmith (Toucan, 

 vol. 4, no. 2, 1977, p. 6). N. G. Smith (in litt. to Eisenmann) noted a 

 bird with "no mask, whitish below with yellow breast patch" on the Siri 

 Grande, Bocas del Toro, on January 8, 1964. 



VERMIVORA PEREGRINA (Wilson): Tennessee Warbler, 

 Reinita Peregrina 



Syliva peregrina Wilson, Amer. Orn., vol. 3, 1811, p. 83, pi. 25, fig. 2. (Banks of 

 the Cumberland River, Tennessee.) 



Small; upper surface mostly bright olive-green; undersurface mostly 

 white. 



Description. — Length 103-113 mm. Adult (sexes alike), crown and 

 hindneck bright olive-green, sometimes partially replaced by gray in 

 birds from February or later; rest of upper surface bright olive-green, 

 more yellowish on rump and upper tail coverts; tail blackish, edged 

 bright olive-green; superciliary white or yellowish white; undersurface 

 white or suffused to greater or lesser degree with greenish yellow; un- 

 dertail coverts white; underwing coverts white. 



Measurements. — Males (10 from Panama), wing 60.5-65.2 (62.8), 

 tail 40.3-45.3 (42.8), culmen from base 10.3-11.9 (11.2), tarsus 15.4- 

 18.1 (16.7) mm. 



Females (10 from Panama), wing 57.2-64.1 (62.0), tail 37.8-46.9 

 (41.2), culmen from base 10.6-12.3 (11.4), tarsus 14.1-17.2 (16.3) 

 mm. 



