WARBLER SUNDAY. . 169 



clamor, and at brief intervals the cheerful dis- 

 cord of the Baltimore oriole joined the din. 

 Within the grove there was a lesser circle of 

 motion and noise. The harsh voice or the 

 passing shadow of a crow made the warblers in 

 that inner circle seem more like fractions of 

 bird life than separate, animated beings. In all, 

 I count upon seeing nineteen species of warblers 

 during the migration. It is possible to see 

 several more kinds, but I refer to my regular 

 friends. The outrunners of the migrating 

 horde are the pine warblers, yellow - rumps, 

 yellow red-polls, black-and-white creepers, sum- 

 mer yellow - birds, and black - throated green 

 warblers. These are followed by the redstarts, 

 black - throated blues, parulas, chestnut - sided 

 warblers, blackburnians, bay - breasteds, Nash- 

 villes, ovenbirds and accentors, and at varying 

 times by the Maryland yellow-throats, Wilson's 

 black-caps, Canadian flycatchers and black-polls, 

 the last-named sounding the knell of the migra- 

 tion with their irritating z-z-z-ing. This hot day 

 by the Assabet was evidently just to the liking 

 of the warblers. Their thin voices sounded in 

 every direction. A female redstart pursued her 

 mate round and round and round the grove, 

 only stopping for a second's rest, in which her 

 sharp little voice filled the chinks in her circle 

 of perpetual motion. A succession of yellow- 



