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Black-throated Green Warbler Dendroica virens

Flight call description A hollow, usually rising "svih" with a tinny quality.


Fig.1. September 4, 1990 (WRE).

Bird in short flight.


Examples     Diurnal     Nocturnal


Similar species See Tennessee Warbler and short rising seeps.


Behavior Primarily a nocturnal migrant but engages in redetermined migration. Gives flight call regularly while perched and in flight during the day and presumably during nocturnal migration.


Spectrographic description Measured calls (N=29) were 29.6-49.5 (40.1) mS in duration and in the 6.2-10 (6.9-8.8) kHz frequency range. The frequency track was usually double-banded (with the upper band typically faint or sometimes lacking), rising (though sometimes nearly level), and often with one or more gentle bends. There was often a slight to distinct downward bend at the end.