By The Chronicle Staff

With long legs, a dagger-like bill and blue-gray plumage, the great blue heron is one of the most recognizable birds along Ohio’s lakes, rivers, ponds and wetlands.

The great blue heron (Ardea herodias) is North America’s largest heron. Adults stand about four feet tall with wingspans approaching six feet, yet weigh only five to six pounds.

Great blues can be identified by its gray-blue body and wings, with black and chestnut markings near the shoulders and white underparts streaked with dark lines.

The head is mostly white with a black stripe extending from above the eye to the back of the head, with adults showing long, black plumes at the rear.

The neck is long and curved. The bill is sharp and yellow and their long legs allow slow stalking in shallow water.

Great blue herons feed day and night and are not selective eaters. Fish are a major food source, but they also eat frogs, snakes, crustaceans, insects, small mammals and other birds.

Unlike other herons, great blue herons often stand motionless in shallow water or slowly walk shorelines while scanning for movement. When prey is within reach, they strike quickly with a rapid extension of the neck and bill.

Though they may appear awkward on the ground, they are strong fliers. In flight, they fold their necks into an S-shape and extend their legs behind them, using slow, steady wingbeats. This tucked neck helps distinguish them from cranes, which fly with necks extended.

Great blue herons nest in colonies called rookeries or heronries, often in tall trees near productive feeding areas such as lakes, rivers and wetlands.

These sites may contain many large stick nests and are sometimes reused for years. Pairs build or repair platform nests from sticks, occasionally lining them with softer material.

While they gather in colonies to nest, adults are usually solitary when feeding. A single heron standing quietly along a pond, creek or lake is a common sight across Ohio’s warmer months.

Most migrate south in winter to find open water, though some remain in Ohio if food and unfrozen habitat are available. They typically return as spring approaches, often by mid-February in warmer years as ice melts, or as late as mid-March after colder winters.

Their size, striking appearance and patient hunting style make them hard to miss. Whether standing still along a shoreline or gliding overhead, they are a familiar presence on Ohio’s waterways. ■