... don't let anyone dare remark that farmer, David Speller's hens "do NOT give a cluck"!

Because ... ... it seems he can prove otherwise - i.e, whether they are "hot", hungry or, the light is too bright, - after Belgian scientists monitored their sounds and, indeed, Mr Speller from Derbyshire, claims the knowledge 'spelt out' through these tests will, in turn, improve the birds'welfare.

Source: METRO