Common grey heron, Gray heron
The Grey heron (Ardea cinerea) is a large long-legged wading bird of the heron native to Europe and Asia and also parts of Africa. It lives in wetland areas and feeds on various aquatic creatures which it catches after standing stationary beside or in the water.
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CrepuscularCrepuscular animals are those that are active primarily during twilight (that is, the periods of dawn and dusk). This is distinguished from diurnal...
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CarnivoreA carnivore meaning 'meat eater' is an organism that derives its energy and nutrient requirements from a diet consisting mainly or exclusively of a...
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PiscivoresA piscivore is a carnivorous animal that eats primarily fish. Piscivorous is equivalent to the Greek-derived word ichthyophagous. Fish were the die...
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TerrestrialTerrestrial animals are animals that live predominantly or entirely on land (e.g., cats, ants, snails), as compared with aquatic animals, which liv...
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AltricialAltricial animals are those species whose newly hatched or born young are relatively immobile. They lack hair or down, are not able to obtain food ...
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Soaring birdsSoaring birds can maintain flight without wing flapping, using rising air currents. Many gliding birds are able to "lock" their extended wings by m...
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GlidingGliding flight is heavier-than-air flight without the use of thrust and is employed by gliding animals. Birds in particular use gliding flight to m...
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TerritorialA territory is a sociographical area that which an animal consistently defends against the conspecific competition (or, occasionally, against anima...
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CongregatoryCongregatory animals tend to gather in large numbers in specific areas as breeding colonies, for feeding, or for resting.
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OviparousOviparous animals are female animals that lay their eggs, with little or no other embryonic development within the mother. This is the reproductive...
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ArborealArboreal locomotion is the locomotion of animals in trees. In habitats in which trees are present, animals have evolved to move in them. Some anima...
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Apex predatorAn apex predator, also known as a top predator, is a predator at the top of a food chain and has no natural predators. These animals usually occup...
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Wading birdsWading birds forage along shorelines and mudflats searching for small aquatic prey crawling or burrowing in the mud and sand. These birds live in w...
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MonogamyMonogamy is a form of relationship in which both the male and the female has only one partner. This pair may cohabitate in an area or territory for...
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ColonialColonial animals live in large aggregations composed of two or more conspecific individuals in close association with or connected to, one another....
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Partial MigrantPartial migration is when within a migratory species or even within a single population, some individuals migrate while others do not.
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starts withThe plumage of the Grey heron is largely ashy-grey above, and greyish-white below with some black on the flanks. Adults have a head and neck white with a broad black supercilium that terminates in the slender, dangling crest, and bluish-black streaks on the front of the neck. The scapular feathers are elongated and the feathers at the base of the neck are also somewhat elongated. Immature birds lack the dark stripe on the head and are generally duller in appearance than adults, with a grey head and neck, and a small, dark grey crest. The pinkish-yellow beak is long, straight, and powerful, and is brighter in color in breeding adults. The iris is yellow and the legs are brown and very long.
Grey herons occur in most parts of Europe, Asia, and Africa. Over much of their range, these birds are resident, but populations from the more northerly parts of Europe migrate southwards; some remain in Central and Southern Europe, and others travel on to Africa south of the Sahara Desert. Grey herons can be found anywhere with suitable watery habitats that can supply their food. Although most common in the lowlands, they also occur in mountain tarns, lakes, reservoirs, large and small rivers, marshes, ponds, ditches, flooded areas, coastal lagoons, estuaries, and seashore. They sometimes forage away from water in the pasture, and can even be found in desert areas, hunting for beetles and lizards.
Grey herons are social birds; they may feed alone or in groups and at night they roost in trees or on cliffs and tend to be gregarious. During the breeding season, they nest in big colonies. Grey herons usually hunt around dawn and dusk but they may also be active at other times of the day. They often perch in trees, but spend much time on the ground, striding about or standing still for long periods with an upright stance, often on a single leg. The main call of Grey herons is a loud croaking "fraaank", but a variety of guttural and raucous noises is heard at the breeding colony. A loud, harsh "schaah" is used by the male in driving other birds from the vicinity of the nest, and a soft "gogogo" expresses anxiety, as when a predator is nearby or a human walks past the colony. The chicks utter loud chattering or ticking noises.
Grey herons are carnivores (piscivores) and feed mostly on fish. However, depending on the season and what is available, they also may eat amphibians, crustaceans, aquatic invertebrates, mollusks, snakes, small birds and rodents, and sometimes some plants.
Grey herons are serially monogamous; they form pairs and remain together for only one breeding season, which extends from early February until May or early June. These birds breed in colonies known as heronries, usually in high trees close to lakes, the seashore, or other wetlands. Courtship involves the male calling from his chosen nesting site and on the arrival of the female, both birds participate in stretching and snapping ceremonies. Females lay 3 to 5 eggs and both parents incubate them for 25-26 days. Chicks hatch altricial and are fed by both parents, who look after them attentively; one of the adult birds stays at the nest for the first 20 days. The young can fly at about 50 days old, remaining for 10 to 20 more days more at the nest.
Grey herons are hunted and trapped by people. They are threatened by changes in their habitat, including deforestation and the drainage of wetlands.
Grey herons have a wide distribution and are relatively abundant; the estimated world population of adults is between 790,000 and 3,700,000 individuals, including 223,000-391,000 breeding pairs in Europe, around 100,000-1 million breeding pairs in China, around 100-10,000 breeding pairs in Korea; 100,000-1 million breeding pairs in Japan and around 100,000-1 million breeding pairs in Russia. Currently, this species is classified as Least Concern (LC) on the IUCN Red List.
Grey herons are important for controlling fish populations in rivers, estuaries, and further bodies of water. Their nests provide shelter for insects and rodents.
Social animals are those animals that interact highly with other animals, usually of their own species (conspecifics), to the point of having a rec...