Great White heron (southern Florida)
The Great blue heron (Ardea herodias) is a tall and statuesque bird when wading in the water seeking its prey, and it is graceful and swift when flying with its slow deep wing beats. It is one of the most majestic wild birds in North America. This stately bird has subtle blue-gray plumage and often stands motionless while it scans for prey or it wades belly deep using long, deliberate steps. It can strike rapidly to capture its prey.
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DiurnalDiurnal animals are active during the daytime, with a period of sleeping or other inactivity at night. The timing of activity by an animal depends ...
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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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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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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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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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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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SemiaquaticSemiaquatic animals are those that are primarily or partly terrestrial but that spend a large amount of time swimming or otherwise occupied in wate...
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Serial monogamySerial monogamy is a mating system in which a pair bonds only for one breeding season.
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FlockingFlocking birds are those that tend to gather to forage or travel collectively. Avian flocks are typically associated with migration. Flocking also ...
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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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MigratingAnimal migration is the relatively long-distance movement of individual animals, usually on a seasonal basis. It is the most common form of migrati...
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U.S. States AnimalsThe Great blue heron is the largest heron native to North America. Notable features of these beautiful birds include slaty (gray with a slight azure blue) flight feathers, red-brown thighs, and a paired red-brown and black stripe up the flanks; the neck is rusty-gray, with black and white streaking down the front; the head is paler, with a nearly white face, and a pair of black or slate plumes runs from just above the eye to the back of the head. The feathers on the lower neck are long and plume-like; they also have plumes on the lower back at the start of the breeding season. The bill is dull yellowish, becoming orange briefly at the start of the breeding season, and the lower legs are gray, also becoming orangey at the start of the breeding season. Immature birds are duller in color, with a dull blackish-gray crown, and the flank pattern is only weakly defined; they have no plumes, and the bill is dull gray-yellow.
Great blue herons live in Nearctic and neotropical regions. In spring and summer, this species breeds throughout Central and North America, southern Canada, the Caribbean, and the Galapagos. They are mostly migratory, though some populations in the southern United States stay in one area year-round. Northern populations move to the south of the United States, or to Central or South America, as they cannot catch fish when the water is frozen. Great blue herons occur in many habitats including mangrove and salt marsh swamps, freshwater swamps and marshes, coastal lagoons, ditches, riverbanks, flooded meadows, and lake edges.
These birds are active mainly in the mornings and during dusk when fishing is best. They prefer to feed alone but loose feeding flocks may form sometimes as they are able to locate schools of fish more easily. At night the birds gather in flocks of more than 100 other herons. During the breeding season, Great blue herons become extremely territorial and defend their nests aggressively. They are a relatively quiet species and make a soft "kraak" if disturbed in flight or "fraunk" if disturbed near their nest. Their greeting to others of their species is an "ar" sound. They use up to 7 different sounds.
Great blue herons are carnivores (piscivores). They eat mainly fish, but also frogs, salamanders, snakes, lizards, young birds, small mammals, crabs, shrimp, crayfish, dragonflies, and grasshoppers, as well as many aquatic invertebrates.
Great blue herons usually have one mate for the duration of the breeding season and then will choose a new mate in the following year, which means they exhibit a serial monogamous mating system. Males perform courtship displays in order to attract a female, including flight displays and posturing with their feathers fluffed up. The birds in the north of their range breed from March until May and November to April in the south. Males often arrive first at the breeding grounds and most of them will choose an existing nest for the season. However, some males, mostly younger ones, will make a new nest. Great blue herons usually breed in colonies, in trees close to lakes, or other wetlands. Colonies typically contain 5 to 500 nests, with an average per colony of 160 nests. 3 to 7 eggs are laid and incubation is shared by both parents, for about 28 days. The young remain in the nest for around 9 to 10 weeks. The chicks start to climb on branches near the nest at the end of week 7, and at week 9 they are able to make short flights. They become reproductively mature at about 22 months old.
The Great blue heron is abundant and widespread, and at species level is not subjected to any major threats. However, some populations, especially those in small areas near the coast, are vulnerable to such localized impacts as habitat destruction, human persecution, and disturbance, pollution.
According to the IUCN Red List, the total population size of the Great blue heron is 500,000-4,999,999 mature individuals. Currently, this species is classified as Least Concern (LC) and its numbers today are Increasing
Due to their diet, Great blue herons control fish and insect populations across a range of their native habitats. They may also affect predator populations (crows, ravens, eagles, raccoons, bears), as items of prey.
Social animals are those animals that interact highly with other animals, usually of their own species (conspecifics), to the point of having a rec...