Сизая сибия Heterophasia pulchella

A silky blue-gray sibia with a dark face found in foothill and montane evergreen forests. As with other sibias, travels through the upper levels of the forest in flocks. No other species combines overall gray plumage with a weak black mask and canopy-loving behavior. Calls loudly and frequently as it forages, giving sharp, querulous twitters, often followed by long drawn-out squeaks.