Grey heron
The grey heron is a tall wading bird known for its skilled hunting techniques in shallow waters, where it preys on fish, crabs, frogs, and other aquatic creatures. Typically found in slow-moving streams, rivers, shallow lakes, and sheltered seashores, the heron employs its long, sharp bill to swiftly capture food. Adult grey herons stand over three feet tall, with a wingspan nearing six feet, and are characterized by their grey and white plumage adorned with black markings. They are social creatures that breed in colonies called heronries, often located near water in tall trees or other elevated structures. During the breeding season, which spans from February to June, males become territorial as they defend their nests and mates. Both parents take turns incubating eggs, with a typical clutch consisting of three to five pale-blue eggs, and they care for their chicks by regurgitating food. Despite facing challenges such as food scarcity, which can lead to high chick mortality, grey herons have a conservation status of "least concern," indicating a stable population. Some individuals may live up to twenty-five years, showcasing their resilience in the wild.
On this Page
Subject Terms
Grey heron
The grey heron is a tall bird which wades after fish and other creatures it finds in and around its shallow-water home. With skill and speed, the heron uses its long, sharp bill to stab or seize its prey.

Kingdom: Animalia
Phylum: Chordata
Class: Aves
Order: Ciconiiformes
Family: Ardeidae
Genus: Ardea
Species: Cinerea
Slow-moving streams, rivers, shallow lakes, and sheltered seashores are frequent and common sites where grey herons feed. Wading in the shallow water, they slowly and patiently stalk their prey. They may also stand motionless and wait for prey to approach within range of their lightning-quick bills. Fish, crabs, frogs, and aquatic insects which swim too closely to the herons meet their end with one stab of the heron's bill. Grass snakes, small birds, and small mammals, like mice, also disappear quickly into the heron's long throat and stomach. Herons may also find food in wet fields, marshes, canals, and even goldfish ponds.
The grey heron is a large bird which stand just over three feet (one meter) tall from its toes to the tip of its bill when it stretches its neck and bill upward. Their head and neck is longer than its body. Adult grey herons weigh around three pounds (1 1/2 kilograms) and have wingspans of nearly six feet (1 3/4 meters) long. Adult birds have grey and white plumage with black markings on their necks and in a few other patches. From the black cap on each bird's head extends a crest of two slender, black plumes. Heron chicks have blackish-brown plumage when they hatch, which becomes all brown by the first winter of their lives. As the young age, the brown becomes grey but has fewer black markings than adult birds. After two years the juveniles become adults with adult plumage.
Grey herons are social birds which live near each other throughout the year. They breed in colonies called heronries. Heronries are most often near water and in clumps of tall trees. Some herons choose to nest in bushes, reedbeds, or on cliffs. During the February to June breeding season, males become territorial and defend their mates and nests from other intruding male herons. Each pair builds a nest of sticks in the treetops, and the female lays three to five pale-blue eggs in her nest. Nests may be used by the same birds year after year. Both male and female incubate the eggs during the 26 day incubation period. They then regurgitate food for their chicks. If food is not available for all the chicks, then only the largest and oldest chicks eat. As many as half of all heron chicks born may die from starvation. About seven weeks after hatching, the chicks are able to fly from the nest. They are mature enough to mate when they are one to two years old.
Conservationists have learned that some grey herons may live up to twenty-five years. Grey herons' conservation status is listed as least concern.
Bibliography
Bower, Justin, and Daniel Rabago. “Ardea Cinerea.” Animal Diversity Web, 2012, animaldiversity.org/accounts/Ardea‗cinerea/. Accessed 1 May. 2024.
“Grey Heron.” The Wildlife Trusts, www.wildlifetrusts.org/wildlife-explorer/birds/herons-egrets-spoonbill-and-crane/grey-heron. Accessed 1 May. 2024.
“Grey Heron.” A-Z Animals, 5 Jun. 2023, a-z-animals.com/animals/grey-heron/. Accessed 1 May. 2024.