Like the nymphs, adult odonates are also excellent hunters.  They are visual predators and depend on their eyesight to capture their prey.  Most of the dragonflies capture only flying prey, whereas many damselflies capture sitting prey as well.  Odonates are able to estimate the distance to potential prey items and fly directly to the point of prey interception.  They can feed while in flight, using the legs to capture the prey and transfer it to the jaws.  The legs are highly specialized for this purpose.