Blue-eared kingfisher 
(Bói cá tai lam or tai xanh, Alcedo meninting)

The blue-eared kingfisher (Alcedo meninting) is found in Asia, ranging across the Indian subcontinent and Southeast Asia.

Alcedinidae, Alcedo: from Latin alcēdō, from Ancient Greek ἀλκυών (alkuṓn): halcyon, kingfisher.
meninting Javanese name Meninting for the Deep-blue Kingfisher (Alcedo).