It is in free variation with partially devoiced uvular fricative trill . Adults trill excitedly before mating, and indicate submission through quiet trilling, whining and squealing. For more info about this letter read Voiced alveolar fricative trill. Increasing the stricture of a typical trill results in a trilled fricative. It can be transcribed as (a devoiced and raised uvular trill) in IPA. This is called a voiced alveolar trill with labiodental articulation. There are two main theories regarding the origination of the uvular trill in European languages. The lesser nighthawk has a rapid, low whistled melodious trill, lasting several seconds. Webbie, Foxx and Lil Trill are among the featured guests. Also, strident vowels are defined by an accompanying epiglottal trill. Most dialects realize as the alveolar tap or alveolar trill . In Amharic the alveolar trill is the usual pronunciation of . Native words with an alveolar trill are rare. The phoneme , written , is a raised alveolar non-sonorant trill. The realization of is , an apical alveolar trill.