The structure of a Green Heron’s foot lends itself to a life of wading at the water’s edge while foraging for food and not sinking into the sand. Three long toes pointing forward and one pointing backward create a considerable amount of surface area, and the more the surface area the less pressure that is placed on the sand. Webbing between its outer toes adds to the snowshoe effect (and also aids the heron when it dives below the surface of the water for prey and must swim back to shore).
This foot structure comes in handy when wading in shallow water, standing on emergent vegetation or perched a low-hanging branch at the water’s edge. As testimony to this, the pictured Green Heron spent an entire morning navigating from water lily pad to water lily pad foraging for fish, insects, frogs and other aquatic life.