Here is a selection of dragonflies that I photographed one lunchtime whilst walking around a pond in Mai Po last week.
First, a close up of the Asian pintail, trumpet tail or grizzled pintail
Then we have what i believe to be the Scarlet skimmer.
And lastly, two photos showing the different colours of one species, the slender skimmer or green marsh hawk
Here is the first photo in full, showing the tail.