Thick-billed Warbler 
(Chích mỏ rộng, Arundinax aedon), Thick-billed Warbler

The thick-billed warbler (Arundinax aedon) breeds in the temperate east Palearctic, from south Siberia to west Mongolia. 
The bird is migratory, wintering in tropical South Asia and South-east Asia.

The genus Arundinax is from Latin arundo, arundinis meaning "reed", and Ancient Greek anax which means "master". 
The specific aedon is from Ancient Greek aedon and means nightingale. 
In Greek mythology, Aëdon was changed into a nightingale after killing her own son while attempting to murder one of the sons of her sister Niobe.