Status: - Rare in the British Isles. (Red Data Book Category 3) Populations exist in about 7 or 8 well dispersed regions all below a line drawn from the Bristol Channel to the Wash.
Habitat: - The slack regions of unpolluted, muddy, slow flowing small rivers, dykes and very mature flooded gravel pits. A prerequisite seems to be bank sides of tall dense emergent vegetation.
Flight period: - Mid May to late July.
General: - Males, though territorial, may be found in close proximity to one another in the late evening. Males often guard egg-laying females, mating having taken place hidden in the dense marginal vegetation. The female egg-lays while in flight, hovering over the same spot for some time, while dipping the tip of her abdomen every few seconds into the water.