Loudest bird?

[Andrew Taylor <>]

On Sun, Mar 08, 2015 at 08:17:24PM +0930, Bob Gosford wrote:
> Steve - @Doctor_Dave Watson over at Twitter says "noisy scrub birds also
> ear-splitting at close range--a mate reckons they're so loud because
> they're deaf because they're so loud!" ... which opens another question -
> why don't loud birds go deaf?

An involuntary contraction of muscles in their ear reduces their
sensitivity when they call - something similar happens in mammal ears
including humans.  Bird inner ears are also more resistant to damage
from loud noises than mammals and regenerate if damaged.

Andrew