Among my friends, also known as “the Blue Bullet” 🙂
The upper side of the head of the male is dark green with transverse blue stripes /as pictured/.
It flies low over the water, waving its wings fast and making a squeaky sound.
Often, it is fixed perched on a branch, leaning low over the water or on the stones.
It feeds on small fish that catch on the water surface, aquatic insects and their larvae, molluscs and small amphibians.