subsong

[suhb-sawng, -song]
noun
  1. an unstructured, often rambling vocalization of low volume heard in young birds and, at the start of the breeding season, in adult birds of certain species.

Origin of subsong

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for subsong

subsong

noun
  1. a subdued form of birdsong modified from the full territorial song and used by some birds esp in courtship
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