Status: - Relatively common south of a line drawn from the Bristol Channel to the Wash. Its range is expanding north up to Lancashire and County Durham and west across Eire.
Habitat: - Rapidly colonizes new man made still water bodies of almost any size and tends to remain faithful to them as long as there is some sunbathed exposed bare ground at the margins. Also some exposed slow flowing rivers, particularly where cattle enter the water keeping the ground clear of vegetation.
Flight period: - Mid May to mid August.
General: - Males adopt territories which they protect by making frequent low flights out over the water from a suitably high vantage point. They return to patrol the well vegetative margin of their territory before briefly resting at the same vantage point. Copulation can be on the wing and is very rapid or it can be performed at rest when it can take up to a quarter of an hour.
The female egg-lays up and down the water margin, dipping the tip of her abdomen repeatedly into the water, to wash off the eggs. The male is often in attendance on guard duty, at least until another female comes into view.