Warbler Setophaga fusca
Hill, Mount Blue State Park,
USA 44° 43' 40.0" N 70° 24' 31.2" W 23
composed of three phrases, each rising in frequency;
low, slow trill or rattle, proceeded by faster, higher
trill, ending with very high frequency downslurred element.
from high in mature spruce woodland.
Click here for the MP3 file
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