FAMILY PARULIDAE 



273 



Comp. Zool., vol. 46, 1905, p. 156). A further eastern record on the 

 Caribbean slope is one I saw at Mandinga, in the Comarca de San Bias, 

 on January 27, 1957. Ridgely (in litt.) saw a Yellow-rumped War- 

 bler in flowering Erythrinas and on the ground in clearings at the Cana, 

 Darien, gold mine on February 28 and March 3, 1981. 



From January 13 to February 15, 1958, this was one of the most 

 abundant birds in the Almirante-Changuinola region. Following the 

 latter date, there was a definite decrease, though the species remained 

 common until the end of February. A week later there were few about, 

 and the last one was noted on March 10. This abundance seems to have 

 been related to severe cold that year in the north, since friends at Al- 

 mirante reported to me that none of these warblers were about in the 

 winter months of 1958-59. 



As Ficken and Ficken (Bird-Banding, 1966, pp. 273-279) noted, the 

 Yellow-rumped Warbler is one of the few members of its family to 

 form flocks of conspecifics in the nonbreeding season. At 840 m on 

 Cerro Campana I have seen groups of a dozen or more move across the 

 slopes, many of them coming up the ravines from the lowlands and ad- 

 vancing to the higher levels. 



The only sighting of the race D. c. auduboni in Panama was made by 

 R. Forster and Ridgely (in litt.), who found 1 bird near Volcan, Chiri- 

 qui, on February 5-6, 1976. The bird was with a typical nominate 

 coronata, so direct comparisons were possible; among other things, 

 the prominent pale yellow throat was obvious, as was its distinctive call, 

 a fast whit rather than the sharper tchek of nominate coronata. 



[DENDROICA TOWNSENDI (TownsendJ: Townsend's Warbler, 

 Reinita de Townsend 



Sylvia townsendi J. K. Townsend (ex. Nuttall MS), 1837, Journ. Acad. Nat. Sci. 

 Philadelphia, 7, p. 191. (Forests of Columbia River.) 



Vagrant from the north. This species is included on the basis of 3 

 sight reports. A male seen repeatedly at Nueva Suiza in the highlands 

 of western Chiriqui on November 19-30, 1967, by T. V. Heatley and 

 V. M. Kleen (Ridgely, 1976, p. 295) . On March 21, 1979, J. Baird and 

 Ridgely (in litt.) photographed a bright female near Volcan, Chiriqui. 

 The bird was in a small grove of exotic cypresses, and was seen there 

 again the next day. On March 21 Baird and Ridgely also saw an adult 

 male Townsend's Warbler on the Boquete Trail above Cerro Punta, at 

 2100 m. The normal winter range is from California south to Nica- 

 ragua. There are also a number of sight reports from Costa Rica.] 



