Can signify “the alternation of two musical tones a diatonic second apart” or “a audio resembling a musical trill.” The flute-like trill on the Wooden thrush is perhaps the most attractive song of any North American hen. The descending trill of its relative the veery isn’t also shabby, both. A https://reallivesocial.com/story3780526/how-much-you-need-to-expect-you-ll-pay-for-a-good-birdwithmostwords-com