The word "Tuwhoo" is a unique spelling of the sound an owl makes. The IPA phonetic transcription for this word is /tʊhuː/. The "t" represents the initial sound which is an aspirated voiceless alveolar stop. The "u" represents a short, stressed vowel sound. The "h" represents a voiceless glottal fricative. The "oo" represents a long, stressed vowel sound. Together, these sounds make the unique spelling of "Tuwhoo" for the sound an owl makes.