Coppersmith Barbets (Psilopogon haemacephalus)
Small and colorful birds. It has a green body with a red forehead, yellow throat, and a black eye stripe. It feeds on fruits and insects. Their bird calls sounded like a repetitive "tuk-tuk-tuk" call, which resembles the sound of a coppersmith hammering metal, hence their name.
I found a hole on a tree. must be their nest. and took the shots :)