Have you been to Crete in August? There is an animal that can bring the biggest noise that I have experienced at least.
The Cicada
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The male is equipped with a sound tool, which produces a more intense than melodic music. The body is located on the waist side of the breast's back and the main body of the chest and consists of a pair of cavities, each of which is covered by a large leather-like scales and contains a very complicated apparatus of three-frame retracted sleeves.
These cavities serve as resonance apparatus to amplify the sound, which is likely to be produced by muscular contractions, resulting in vibration of the mentioned membranes.
These sounds can go up to 900 Hz and 120 decibels.
Source: Wikipedia
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I do not know if you can call that singing? Still, it was an experience.
Camera: Nikon D80, nikkor 18-55 mm
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