Andrew Chick Ecology

The Black-tailed Skimmer (Orthetrum cancellatum) is a striking dragonfly most often encountered around lakes, gravel pits, reservoirs and other areas of open, still or slow-moving water. It is particularly fond of sites with plenty of bare ground or sparse vegetation around the water’s edge.

Mature males are especially distinctive. The abdomen develops a beautiful powdery blue coating, contrasting with a black tip and dark thorax. Females and immature males look quite different, with yellowish-brown abdomens marked by two prominent dark longitudinal lines.

Black-tailed Skimmers are usually on the wing from late May through to August, with activity peaking during the warmer summer months. Males frequently patrol low over the water before settling on bare earth, stones or waterside vegetation, often returning repeatedly to the same favoured perch.

Once a relatively local dragonfly in Britain, the Black-tailed Skimmer has expanded its range considerably in recent decades, spreading northwards and becoming established at many new sites. Its habit of resting in open positions also makes it a particularly rewarding dragonfly to watch and photograph on a warm summer’s day.