Upper parts: greyish-blue; head, white with a wide black stripe on either side, extending from the eye to a long slender crest. Neck: grayish-brown edged with black down sides. Under parts: randomly streaked and coloured black and white. Bill: yellowish, long, tapering to a sharp point. Legs: browny-green, long. Male and female are essentially indistinguishable. Size: 108 - 132 cm (43.25 - 53 in). Eggs: 3 - 5; light greenish-blue. Incubation period: 26 - 27 days.
In and around fish-bearing waterways. In deciduous, coniferous or mixed woods, usually in small colonies. Flattish nest is made of twigs and small branches in the upper parts of tall trees.
The Great Blue Heron's long, stilt-like legs allow it to wade in shallow waters to feed on a diet of fish, frogs and water snakes. It will also eat salamanders, large insects, mice and other small rodents. The song of the Great Blue Heron is a goose-like "onk".