What is "clucks"

Usage examples of "clucks".

After which, in a little house close by the more solid building in which Sulla lived, he hovered anxiously between cauldrons and toiling scrapers, insisting upon personally inspecting every carcass and every kidney, insisting that he personally test the temperature of all the water, measuring meticulously and driving the servants to the point of exasperation with his fusses and clucks and tches.