290 



BIRDS OF THE REPUBLIC OF PANAMA PART 4 



Gamboa horse stables October 22, 1964, was retaken there March 5, 

 1965, and 1 banded on the Pipeline Road near Gamboa November 7, 

 1964, was recaptured there October 21, 1965. One banded by Karr 

 (Bird-Banding, 1971, p. 299) on the Chiva Chiva Road, Canal Zone, 

 on December 14, 1968, was recaptured 100 m from the same spot on 

 January 27 and 28, 1971. 



Willis (Living Bird, 1966, pp. 207-208) found that Kentucky War- 

 blers were regular followers of army ant swarms on Barro Colorado 

 Island. They usually stay ahead or to the side of the ants, but often as- 

 sociate with them for more than 5 minutes at a stretch. If 2 individuals 

 are near a single group of ants they usually stay at different ends of the 

 swarm. When not searching for insects flushed by ants, Kentucky 

 Warblers often associate with or follow Spotted Antbirds (Hylophytax 

 naevioides) or with wandering mixed flocks. On March 15, 1955, at 

 El Volcan, Chiriqui I saw 1 with a moving flock of warblers; prob- 

 ably all were migrants. One collected by Burton (Bull. Brit. Orn. Club, 

 1975, p. 85) weighed 13.5 g. Ridgely (1976, p. 299) points out that 

 this species and the Ovenbird are the only 2 North American migrant 

 warblers that regularly inhabit the interior of mature forests in winter; 

 they are, therefore, more sensitive to habitat destruction than most other 

 wintering species, which usually inhabit more or less disturbed areas 

 when in Panama. 



Raikow's (Bull. Carnegie Mus. Nat. Hist. no. 7, 1978, p. 35) myo- 

 logical studies have confirmed the traditional separation of the genus 

 Oporornis from Geothlypis, into which the former had been placed by 

 Lowery and Monroe (Check-list Birds World, vol. 14, 1968, p. 38) . 



OPORORNIS AGILIS (Wilson): Connecticut Warbler, 

 Reinita de Connecticut 



Sylvia agilis Wilson, 1812, Amer. Ornith., 5, p. 64, pi. 39, fig. 4. (Connecticut.) 



Small; upper surface yellowish olive; head and breast gray; under- 

 surface yellow. 



Description. — Length 118-131 mm. Adult male, crown gray, with 

 feathers often tipped yellowish olive; rest of upper surface, including 

 tail, yellowish olive, slightly lighter on rump and upper tail coverts; 

 primaries dusky, with outer web edged yellowish olive; rest of wing 

 yellowish olive; complete orbital ring white; throat, upper breast, and 

 sides of head gray, slightly lighter on throat; sides and flanks light yel- 

 lowish olive; rest of undersurface yellow; bend of wing yellow; under- 

 wing coverts light yellowish olive. 



