Heron represents the holy spear, and the concept of spear magic. The holy spear is also the messenger from the gods, and heron comes into our lives like an arrow from the gods, to make sure we're on target. If heron has come into your life, look at the imagery of spears and arrows, and visualize aiming for your goals to make sure you're 'on target.'
Herons (and Egrets) are the name for a collection of wading birds with long, sharp beaks, long legs, good eyesight, short tails, and long necks that sit on the back of the bird's body when resting. The wetlands are their primary habitat.