Can indicate “the alternation of two musical tones a diatonic second aside” or “a audio resembling a musical trill.” The flute-like trill of the Wooden thrush is Probably the most beautiful track of any North American bird. The descending trill of its relative the veery isn’t far too shabby, either. https://bookmarkextent.com/story19878722/examine-this-report-on-birdwithmostwords-com