44 AVIFAUNA COLUMBIANA. 



38. (70.)Dendrcecaooronata {Linn.) Gray. Yellow-rumped Warbler. 



A n-inter resident; extremely abundant, especially during the spring 

 migrations, when the numbers which pass the. winter are recruited by 

 arrivals from the South, before all go off together. They arrive from the 

 North the first or second week in October, and do not disappear until 

 the second week in the following May, They are songless whilst with 

 us, having only a simple chirping note, but just before they leave they 



Fig. 12. — Head of Yellow-rumped Warbler, nat. size. 



acquire their complete wedding dress, having moulted in April. The 

 process seems to be protracted during the whole of that month, when 

 most individuals shot are found to be in patchy garb; spick-span speci- 

 mens, however, are to be caught early in May, just before they leave. 

 They are most numerous in April and October, least so in the depth of 

 winter. They are to be found everywhere, but are fondest of hedges, 

 copses, orchards, and cedar thickets, which they haunt in troops, accom- 

 panied by titmice and sparrows. A specimen was taken in spring of 

 1882, in which the throat patch had a decided yellow tinge to the new 

 feathers, looking very much like an Audubon's Warbler. [H9] 



39. (71.) Dendrceca blackburnae (Gm.) Bd. Blackburn's Warbler. 



A spring and autumn migrant ; does not breed here. In spring, May 

 1 to the 20th; in fall, September 1 to the 25th. Common in high, open 

 woods ,with virens, cwrulescens, striata, and others. Very lovely specimens 

 of this Prometheus unbound are to be had just before their departure in 

 spring. In 1882 they entered the city like the many other beautiful 

 sylvan apparitions which graced that memorable season, and we saw 

 them for several days flashing through the streets and parks. [1-1] 



40. (75.) Dendrceca striata (Forst.) Bd. Black-poll Warbler. 



An abundant spring and autumn migrant; none breed here. In spring, 



Pig. 13.— Head of Black-poll Warbler, nat. size. 



May 7 to June 1; in fall, September 1 to second week in October. Thus 

 at both seasons the Black-poll arrives latest and stays longest of all the 



