Sungei Buloh - bird shooting

Bought a Nikon 2x TC teleconverter and went to Sungei Buloh to practice my birding photography skill.
Today i am lucky, manage to found a woodpecker.
This species of woodpecker is Black-rumped Flameback, (Dinopium benghalense), also known as the Lesser Golden-backed Woodpecker.

Equipment - D300 + 300mm f2.8 + 2x teleconverter.