If you've ever watched chasers (dragonflies, that is) you'll know why they have that name. They will perch on a convenient stem, but as soon as another dragonfly approaches there will be a high-speed pursuit as they attempt to clear invaders from their territory. Four-spotted chasers may be on the wing for much of spring and summer, usually colonising standing water such as ponds, lakes and ditches.
As with broad-bodied chasers they will often perch at a convenient angle to the sun for photography. This was one of a number of four-spotted and broad-bodied chasers providing entertainment at a small pond in Monks Wood, Cambridgeshire in June.