Not at all. The ultrasonic noise produced by bats is for navigation by echolocation or sonar; not audible to the human ear and not reproducible by the human voice. The sounds they make for communication are mostly both audible to the human ear and within human vocal frequency range. https://www.youtube.com/watch?v=JMXpHaHuqFc
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Sorry, my bad . I used the keyboard key name (C in the sixth octave) rather than the note name. But, in fact, there are different naming conventions for the notes. http://www.harmoniumnet.nl/klavier-keyboard-ENG.html
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