Vocal Vowels. Hollow plastic models of the human vocal tract turn the squawk of a duck call into vocal sounds (via Plep)
The amazing honking sheep performing the Blue Danube (via the Presurfer)
The call of the Limnodynastes dumerili Pobblebonk (banjo) frog
Males usually call concealed in floating vegetation or less commonly from land at the water's edge. The call is a short musical, explosive note producing a resonant "bonk". The call is usually repeated every few seconds
(boynton heard this call last Sunday. A frog mistaken for a duck - or is that honk for bonk?)
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