Part 1. 'I don't do calls' -- Crossing the sound barrier -- Tone and timpre -- Pitch and frequency -- Rhythm and timing -- Part 2. Put it all together and what have you got? -- Simple calls -- Simple ...
If you are interested in birds, you really have to be interested in birds songs — and really any kind of sounds birds make. Generally the term “bird calls” is used to encompass sounds of any kind, but ...
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