Birdwatching Video: The Complicated Song Of The Hermit Thrush
This video explains how ornithologists use sonograms to very closely examine the range of sounds that are found in the song of the Hermit Thrush. The expert explains that the song of the Hermit Thrush contains sounds outside the normal range of human hearing, but which are audible to thrushes as they sing and listen for each others songs.
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Video Courtesy: Expert Village