The rare Norfolk hawker (Anaciaeschna isoceles) is a pale brown dragonfly, with a distinctive yellow triangle on its body. It needs unspoilt grazing marsh with non-saline water to survive, so is only found in unpolluted fens, marshes and ditches of the Broads National Park in Norfolk and Suffolk where Water Soldier is growing. It is only on the wing for a short period during June and early July. The Norfolk hawker is entirely pale brown apart from a yellow triangle at the base of the body. It is similar to the larger Brown Hawker, but paler in colour, with clear wings and green eyes – hence, it is also known as the Green-Eyed Hawker.
