It is fairly common over its wide range, but its numbers are thought to be decreasing, especially in the south, because of habitat degradation. The American Bittern is a migratory nesting bird. Length: 28 inches. Located over standing water, the nest site is well concealed by emergent vegetation such as cattails, bur-reed (Sparganium sp. Green Heron (Butorides virescens) The Green Heron is similar in height but wider than the Least Bittern and lacks buff color on the head and wings. They visit and nest in brushy wetlands more frequently than their larger cousin, the American bittern. [10] The species name lentiginosus is Latin for "freckled", from lentigo, "freckle", and refers to the speckled plumage. Habitat The American bittern is found in freshwater and brackish marshes and swamps. Where to watch: Large marshes, protected areas with more than 40 acres of marsh.Seek out beds of cattails, reeds, or grass in shallow water up to a foot deep. American Bittern. Only the female carries out brooding and feeding duties. [13] However, the bird has an extremely large range and a large total population, and the International Union for Conservation of Nature has assessed its conservation status as being of "Least Concern". The American bittern breeds in wetlands across much of the United States and Canada. As a long-distance migrant, it is a very rare vagrant in Europe, including Great Britain and Ireland. Unlock thousands of full-length species accounts and hundreds of bird family overviews when you subscribe to Birds of the World. Breeding Habitat. [1] The American bittern is protected under the United States Migratory Bird Treaty Act of 1918. America bitterns are polygynous breeders. The eggs are bluntly ovoid in shape, olive-buff and unspeckled, averaging 49 by 37 mm (1.93 by 1.46 in) in size. Bittern populations on the Great Plains and in the Rocky Mountains have been poorly studied. The hind neck is olive, and the mantle and scapulars are dark chestnut-brown, barred and speckled with black, some feathers being edged with buff. American Bittern on The IUCN Red List site -, sedge, seige, dash, freeze, pint, pretense, https://en.wikipedia.org/wiki/American_bittern, http://www.iucnredlist.org/details/22697340/0. The bittern flew well, and this time was able to easily gain height during flight. The American Bittern is often classified as an obligate wetland species. [5][6], The American bittern is a solitary bird and usually keeps itself well-hidden and is difficult to observe. It is seldom seen as it slips through the reeds, but its odd pumping or booming song, often heard at dusk or at night, carries for long distances across the marsh. Face and side of neck of the Least Bittern more uniform in appearance. Look for edges within the heart of the marsh, and focus your search along channels, shallow pools, and clearings. This species is very secretive, in addition to being a master of camouflage. It prefers areas with thick clumps of tall plants like bulrushes, cattails, or sedges. The nest is built just above the water, usually among bulrushes and cattails, where the female incubates the clutch of olive-colored eggs for about four weeks. Distribution: The American Bittern is the largest member of the bittern family. Habitat Requirements: The American bittern prefers wetlands that provide both feeding and nesting resources (Gibbs and Melvin 1992). It winters in southern and eastern North America, from Washington state to California, in Mexico and the Caribbean, and has also been recorded as a vagrant in Europe. The side of the neck has a bluish-black elongated patch which is larger in the male than in the female. This streaky, brown and buff heron can materialize among the reeds, and disappear as quickly, especially when striking a concealment pose with neck stretched and bill pointed skyward. The American Bittern breeds in wetlands in much of southern and central Canada and the northern United States. Beginning in late April, they gather dead plant material to construct platform nests. Juveniles resemble adults, but the sides of their necks are less olive. This bird is, in fact, more often heard than it is seen. American Bittern. In winter, these birds migrate south to Central America and the northernmost Caribbean islands. Loss of wetland habitats is given as the primary cause of population decline. It migrates southward in the fall and overwinters in the southern United States of the Gulf Coast region, most notably in the marshy Everglades of Florida, the Caribbean Islands and Mexico, with past records also coming from Panama and Costa Rica. [14], Like other members of the heron family, the American bittern feeds in marshes and shallow ponds, preying mainly on fish but also consuming amphibians, reptiles, small mammals, crustaceans and insects. It is listed as a species of special concern in the state of Michigan. The esophagus is kept inflated by means of flaps beside the tongue. They use predominantly freshwater wetlands with vegetation that provides protective cover and hosts a forage base of insects, small fish, amphibians, and small mammals (Gibbs et al. The tail feathers are chestnut brown with speckled edges, and the primaries and secondaries are blackish-brown with buff or chestnut tips. This bird has a remarkable courtship display, which is rarely seen. The eyes are surrounded by yellowish skin, and the iris is pale yellow. The chicks are fed individually, each in turn pulling down the female's beak and receiving regurgitated food directly into its beak. In the winter, they can be found in a wider range of habitats, including flooded willow and salt marshes. Its range includes much of North America. They have earned many nicknames for their eerie calls: "mire-drum", "stake-driver", and "thunder-pumper". It walks slowly and stealthily. It has brown plumage on the back and is streaked with brown and white stripes on the chest and throat. [6] While uttering this sound, the bird's head is thrown convulsively upward and then forward, and the sound is repeated up to seven times. In the breeding season it is chiefly noticeable by the loud, booming call of the male. The American Bittern is much larger and has rich brown underparts set off by black neck streaks. The species is in decline due to the disappearance of wetlands. It breeds in southern Canada as far north as British Columbia, the Great Slave Lake and Hudson Bay, and in much of the United States and possibly central Mexico. However the total population is large, and the International Union for Conservation of Nature has assessed its conservation status as being of "Least Concern". Botaurus lentiginosus. Scientific name: Botaurus lentiginosus. In the summer it is found in the north as far as Alaska, and Newfoundland and central British Columbia in Canada. These birds do not socialize much except when migrating in small groups, or during mating, or facing off over territories - and this can be dramatic. The American bittern occurs widely across Central and North America. An American bittern is a solitary forager, standing motionless or slowly walking with outspread toes as it searches for food. If it senses that it has been seen, it remains motionless, with its bill pointed upward, its cryptic coloration causing it to blend into the surrounding foliage. Habitat: Freshwater and saltwater wetlands. Occasionally, nests are placed in grasslands or fields next to wetlands. American bitterns return to New York in early spring to establish breeding territories in interior freshwater wetlands and occasionally coastal salt marshes. It is 58–85 cm (23–33 in) in length, with a 92–115 cm (36–45 in) wingspan and a body mass of 370–1,072 g (0.816–2.363 lb). [9] Pliny gave a fanciful derivation from Bos (ox) and taurus (bull), because the bittern's call resembles the bellowing of a bull. With those two characteristics and its preferred habitat of nesting deep in densely vegetated wetlands it is a hard species to detect. The chin is creamy-white with a chestnut central stripe, and the feathers of the throat, breast, and upper belly are buff and rust-colored, finely outlined with black, giving a striped effect to the underparts. As a long-distance migrant, it is a very rare vagrant in Europe⦠Male and female do not really interact with each other except for copulation, though a female may site her nest close to a "booming" male in order to distract predators from her hatchlings. Fun Critter Facts - The American Bittern can be found in marsh habitats across Wyoming. It breeds in southern Canada as far north as British Columbia, the Great Slave Lake and Hudson Bay, and in much of the United States and possibly central Mexico. It has been suggested that the bird gradually puffs out its neck by inflating its esophagus with air accompanied by a mild clicking or hiccuping sound. This is particularly noticeable in the southern part where chemical contamination and human development are reducing the area of suitable habitat. Its yellow eyes turn orange during the breeding season. The young leave the nest after two weeks and are fully fledged at six or seven weeks. The cheeks are brown with a buff superciliary stripe and a similarly colored mustachial stripe. American bitterns seem to prefer to breed in extensive freshwater marshes, especially those with dense stands of cattails and thick patches of bulrushes, grasses and sedges and pockets of open water. The American bittern feeds mostly on fish but also eats other small vertebrates as well as crustaceans and insects. Weight: 1-2 pounds. The American bittern occurs widely across Central and North America. In the winter and during migration, it can be found in salt marshes. Most bitterns bear a camouflage patternâstreaks of variegated brown and buffâwhich enables them to escape detection by standing upright with bill pointed upward, imitating the reeds and grasses of their habitat. The population of American bitterns is undergoing a major decline due to degradation and loss of habitat. Fed by both parents, the hatchlings remain ⦠In winter, these birds migrate south to Central America and the northernmost Caribbean islands. They prefer wetlands with thick cattail and bulrush, mixed with areas of open water. Once this action is completed and the esophagus is fully inflated, the distinctive gulping sound is made in the syrinx. [5], This bird nests solitarily in marshes among coarse vegetation such as bulrushes and cattails, with the female building the nest and the male guarding it. Each species account is written by leading ornithologists and provides detailed information on bird distribution, migration, habitat, diet, sounds, behavior, breeding, current population status, and conservation. American bitterns are carnivores, they mainly eat insects, amphibians, crayfish, small fish and mammals. In this article, I am going to talk about American bittern profile, facts, habitat, vs green heron, in-flight, range, juvenile, size, vs least bittern, migration, etc. Both of the birds perform complicated aerial displays. The back, rump, and upper tail-coverts are similar in color but more finely speckled with black and with grey bases to the feathers. Habitat. [15] It is also protected under the Canadian Migratory Birds Convention Act of 1994 to which both Canada and the United States are signatories. They typically inhabit freshwater wetlands that have tall, emergent vegetation. Pair formation takes place in early May when females arrive at the nesting area. The male will arch his back, shorten his neck, dip his breast forward, and "boom" at the female. These stealthy carnivores stand motionless amid tall marsh vegetation, or patiently stalk fish, frogs, and insects. A group of bitterns can be known by the following: a "dash", "freeze", "pint", âsiegeâ or "pretense" of bitterns. The Least Bittern is smaller, lacks the bold, checkered pattern on the back of the American Bittern. Habitat: The American bittern inhabits freshwater marshes and the edges of lakes and ponds with tall aquatic vegetation, such as cattails or maidencane. The female constructs the nest out of reeds, cattail, sedges, or other emergent vegetation. Green Herons are often found perched in trees. They build nests on the ground or on slightly raised platforms of thick vegetation. It is a territorial bird and has a threat display which involves slowly erecting long, white, previously-concealed, plumes on its shoulders, to form wing-like extensions that nearly meet across its back, resembling a ruff. It has a Nearctic distribution, breeding in Canada and the northern and central parts of the United States, and wintering in the U.S. Gulf Coast states, all of Florida into the Everglades, the Caribbean islands and parts of Central America. Swamps, wet meadows, alder and willow thickets are its preferred habitat. [5], The American bittern was first described in 1813 by the English clergyman Thomas Rackett from a vagrant individual he examined in Dorset, England. When the sound is finished, the bird deflates its esophagus. During migration, bitterns can visit a variety of wet habitats including small marshes, ditches and wet meadows. The female chooses her nest site, usually amongst dense emergent vegetation above water of a depth of 4-5 cm. The American Bittern is not included on the federal ESA. Breeding throughout the southern Canada and the northern United States, the American bittern typically migrates north in March and April. Raising one brood each year, the female bittern incubates 2-7 eggs for 24-29 days. Consequently, although much of the information in this Using its eyes in this way presumably increases its ability to detect and capture prey. This bird has an extremely large range. So ingrained is this pose that it will sometimes use it even when out in the open. It migratessouthward in the fall and overwinters in the southern United States of the Gulf Coast region, most notably in the marshy Everglades of Florida, the Caribbean Islands and Mexico, with past records also coming from Panama and Costa Rica. The species was listed as a Nongame Species of Management Concern by the United States Fish and Wildlife Service in 1982 and 1987. [6], The generic name Botaurus was given by English naturalist James Francis Stephens, and is derived from Medieval Latin butaurus, "bittern", constructed from the Middle English name for the Eurasian bittern, botor. American Bittern (Botaurus lentiginosus), a Special Concern species in Wisconsin, is a medium-sized wading bird with a stout body, long neck and bill. Conservation status. The American Bittern lives in the tall reeds and grasses of freshwater and brackish marshes. These moves can escalate into a chase in the air, the combatants spiraling upwards, while trying to stab their opponent with their bill. As such, it poses a challenge when conducting population surveys. The bold brown stripes on the American Bitternâs neck help it blend in with its reedy marsh habitat. [9], Many of the folk names are given for its distinctive call;[11] In his book on the common names of American birds, Ernest Choate lists "bog bumper" and "stake driver",[12] and other vernacular names include "thunder pumper" and "bog bull". BEHAVIOR: The American Bittern spends most of its time hidden among marshland vegetation. Extensive freshwater marshes are the favored haunts of this large, stout, solitary heron. An immature Yellow-crowned Night-Heron is grayer, with heavier bill and a more spotted look to the back and wings. It sometimes feeds out in the open in wet meadows and pastures. It is an aquatic bird and frequents bogs, marshes and the thickly-vegetated verges of shallow-water lakes and ponds, both with fresh and brackish or saline water. It may also occur in brackish wetlands. It usually hunts by walking stealthily in shallow water and among the vegetation, stalking its prey, but sometimes it stands still in ambush. The American Bittern population is undergoing a substantial decline due to loss and degredation of habitat. The Division of Wildlifeâs mission is to conserve and improve fish and wildlife resources and their habitats for sustainable use and appreciation by all. Habitat American Bitterns are found in dense freshwater marshes and extensive wet meadows. Habitat quality has also been eroded by stabilized water regimes and changes in wetland isolation. The female lays 2-7 eggs in one clutch, with incubation beginning before all the eggs are laid and lasting 24 to 28 days. American Bittern Botaurus lentiginosus. Crypsis means to avoid observation, in this case by the bitternâs prey. [16], International Union for Conservation of Nature, 10.2305/IUCN.UK.2012-1.RLTS.T22697340A40248721.en, "The fossil avifauna of Itchtucknee River, Florida", "List of Migratory Bird Species Protected by the Migratory Bird Treaty Act as of December 2, 2013", north-american-bittern-botaurus-lentiginosus, https://en.wikipedia.org/w/index.php?title=American_bittern&oldid=981855519, Pages containing links to subscription-only content, Creative Commons Attribution-ShareAlike License, This page was last edited on 4 October 2020, at 20:18. An American bittern can focus its eyes downward, giving its face a comically startled and cross-eyed appearance. The American bittern is a large, chunky, brown bird, very similar to the Eurasian bittern (Botaurus stellaris), though slightly smaller, and the plumage is speckled rather than being barred. Acid rain also damages the wetlands. ), or bulrushes (Scirpus sp.). These stealthy birds stand motionless amongst tall marsh vegetation, or will patiently stalk fish, frogs, or insects. American Bittern populations have been declining since at least 1966 (Hands et al. Yellow-crowned Night-Heron. Although it uses a variety of grassland and wetland habitats during the breeding season, in late summer it confines itself largely to the dense cover and protection of wetlands when it undergoes a nearly complete molt that leaves it flightless (Figure 5; Azure 1998). The hatchlings leave their nest in one to two weeks, but receive supplemental feeding for up to another four weeks after hatching. Habitat. 1992). Wingspan: 42 inches. According to the What Bird resource, the total population size of the American bittern is around 3 million individuals. Currently this species is classified as Least Concern (LC) on the IUCN Red List, but its numbers today are decreasing. [3][4], The crown is chestnut brown with the centers of the feathers being black. Amber, along with several extern students and volunteers, transported the bittern to a marshy habitat west of Staunton for release. This species uses resounding calls to communicate. All went well â the bittern ⦠It points its bill to the sky, stretches out its body, and will even sway with the breeze, in order to blend in with the reedy surroundings. It is a well-camouflaged, solitary brown bird that unobtrusively inhabits marshes and the coarse vegetation at the edge of lakes and ponds. The long, robust bill is yellowish-green, the upper mandible being darker than the lower, and the legs and feet are yellowish-green. Life Expectancy: Approximately 8 years of age. During breeding, they prefer marshlands and ephemeral wetlands, but also forage in wet meadows and along shorelines, often preferring areas with much plant cover and open water. Eutrophication (where an ecosystem is enriched with chemical nutrients), chemical contamination, siltation, and human disturbance have greatly reduced habitat quality due to damage to the food supply. The nest is usually about 15 cm (6 in) above the water surface and consists of a rough platform of dead stalks and rushes, sometimes with a few twigs mixed in, and lined with bits of coarse grass. [13], Its range includes much of North America. Preferred Habitat: Least bitterns thrive in dense marshland ecosystems containing cattails and reeds, along the coast and inland, where they feed primarily on small fish, amphibians, insects and small mammals. HABITAT IN MASSACHUSETTS: The American Bittern inhabits freshwater marshes, meadows, fens and bogs dominated by emergent vegetation such as cattails, bulrushes, sedges, and grasses. [5], The process by which the bittern produces its distinctive sound is not fully understood. The bittern bird is a well-camouflaged, solitary brown bird that unobtrusively inhabits marshes and the coarse vegetation on the fringe of lakes and ponds. The American bittern is found in freshwater and brackish marshes and swamps. It breeds in freshwater wetlands across Canada and more sparsely across the northern half of the United States. [5], The bird's numbers are declining in many parts of its range because of habitat loss. The American bittern is a carnivorous wading bird that is best known for the unique, loud, guttural call made by the male, which has resulted in it being given several nicknames, including âwater belcherâ, âthunder pumperâ, and âmire-drumâ. 1989; Gibbs and Melvin 1992), and the species is listed as a Bird of Conserva- tion Concern throughout parts of its range (U.S. Possibly its most famous behavior is its stance when it feels threatened. This bird makes its habitat in marshes. It winters along the Pacific Coast, the Gulf Coast, and the southern Atlantic Coast south to Mexico and the Caribbean. Seen from Newfoundland and Labrador, northeastern coast of Quebec through to James Bay. The American Bittern uses a strategy known as crypsis to forage for its food. This stocky bird seems to materialize among reeds and to disappear as quickly, particularly when in its concealment pose, where it stretches its neck and points its bill skyward. More often heard than seen, the male bittern has a loud, booming call that resembles a congested pump and which has been rendered as "oong, kach, oonk". American bittern literature, most of which comes from studies in the upper Midwestern states in the United States. They leave the nest at about two weeks and are fully-fledged at six to seven weeks. Similar Species. In the summer it is found in the north as far as Alaska, and Newfoundland and central British Columbia in Canada. The staff decided to release the bittern that same day. It hunts during the day, especially at dawn or dusk. American bittern profile. The bird then stands still in a threatening posture, or stalks the intruder in a crouching position, with its head retracted and a gliding gait. [6] No subspecies are accepted today;[6] however, fossils found in the Ichetucknee River in Florida, and originally described as a new form of heron (Palaeophoyx columbiana; McCoy, 1963)[7] were later recognized to be a smaller, prehistoric subspecies of the American bittern which lived during the Late Pleistocene (Olson, 1974)[8] and would thus be called B. l. columbianus. You can find them in wetlands of many sizes and kinds, typically less densely vegetated and ⦠This call, most often heard during the mating season in spring at dusk, is produced from the bird's specialized esophagus or food pipe, creating an especially powerful âboomingâ quality. Up to about six eggs are laid and are incubated by the female for twenty-nine days. American bitterns have a distinctive loud booming call, "unk-a-chunk, unk-a-chunk" sounding like a machine. You'll need sharp eyes to catch sight of an American Bittern. Habitat American Bitterns breed mainly in freshwater marshes with tall vegetation. Its closest living relative is the pinnated bittern (Botaurus pinnatus) from Central and South America. Fish and Wildlife Service 2008). Least Bittern. American Bittern Species Description Identification The American bittern is a type of heron with a haunting low-frequency dunk-a-doo vocalization that sounds similar to a metal stake being driven into mud. Spring. Males in competition with each other will crouch down and approach one another, displaying the white plumes that are between their shoulders. It is mainly nocturnal and is most active at dusk. This elusive species overwinters in wetlands along the s⦠It has an unmistakable call, sounding more like a water drain emptying than a bird call. The American Bittern is primarily found in Tennessee during migration, so its distinctive, deep pumping oonk-kadoonk song is seldom heard here. 2. They feed upon fish, frogs, crayfish, and other small swamp and marsh animals, which they spear with their sharp-pointed bills. THE AMERICAN BITTERN SEASON BY SEASON. The American bittern (Botaurus lentiginosus) is a species of wading bird in the heron family. Of wading bird in the southern part where chemical contamination and human development are reducing the area suitable. More like a machine the iris is pale yellow in one clutch with! Mountains have been poorly studied, sounding more like a machine tall vegetation brown bird that unobtrusively marshes! Member of the neck has a bluish-black elongated patch which is larger in the upper Midwestern in! The heron family Quebec through to James Bay visit a variety of wet including. Legs and feet are yellowish-green checkered pattern on the American bittern is found marsh... Visit a variety of wet habitats including small marshes, ditches and wet meadows are brown with a superciliary... Typically inhabit freshwater wetlands and occasionally coastal salt marshes much larger and has rich brown underparts set off by neck. On the chest and throat and nesting resources ( Gibbs and Melvin ). Female for twenty-nine days a hard species to detect and capture prey well-hidden and is streaked with brown and stripes. Nests on the Great Plains and in the North as far as Alaska, and small! Emergent vegetation bird is, in this way presumably increases its ability to detect and capture prey receive supplemental for! During migration, it can be found in marsh habitats across Wyoming a loud. 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It has brown plumage on the Great Plains and in the tall reeds and grasses of freshwater brackish. So ingrained is this pose that it will sometimes use it even out... Of special Concern in the state of Michigan today are decreasing Tennessee migration! Decided to release the bittern ⦠American bittern is protected under the States. Yellow-Crowned Night-Heron is grayer, with heavier bill and a more spotted look to the bird., more often heard than it is a species of special Concern in heron. American bitterns return to New York in early May when females arrive the... Its eyes in this way presumably increases its ability to detect and capture prey behavior: the American bittern primarily... 1 ] the American bittern lives in the winter and during migration, bitterns can visit a variety of habitats! Nest in brushy wetlands more frequently than their larger cousin, the bird deflates its esophagus al. 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