font settings and languages

Font Size: Large | Normal | Small
Font Face: Verdana | Geneva | Georgia
Languages:

Botaurus lentiginosus

(American Bittern)

Common Names

[ Back to top ]

Click on the language to view common names.

Common Names in Dutch:

Amerikaanse Roerdomp, Noordamerikaanse Roerdomp

Common Names in English:

American Bittern, Barrel-Maker, Bog Hen, Bog-Bull, Bog-Pumper, Bog-Trotter, Booming Bittern, Butterbump, Dunk-A-Doo, Flying Fox, Freckled Heron, Indian Hen, Indian Pullet, Look-Up, Marsh Hen, Meadow Hen, Mire Drum, Mud Hen, Poke, Pole, Pond Guinea, Scoggin, Shitepoke, Sky-Gazer, Stake Driver, Stake-Bird, Stake-Driver, Sun-Gazer, Thunder Pumper, Water-Belcher

Common Names in French:

Butor Américain, Butor D'amèrique, Butor D'amérique, Butor D'amrique

Common Names in German:

Amerikanische Rohrdommel, Nordamerikanische Rohrdommel

Common Names in Italian:

Tarabuso Americano

Common Names in Japanese:

アメリカサンカノゴイ

Common Names in Russian:

Выпь американская

Common Names in Spanish:

Avetoro Lentiginoso, Avetoro Norteño, Avetoro Norteo

Description

[ Back to top ]

Physical Description

Adult : Head : Crown: dark brown or chestnut Bill: yellowish Shape : pointed Neck: long black stripe on buffy brown streaked with white Throat : white Body: Belly: white Mantle: finely patterned brown Upperparts: streaked brown and white.Immature: Head: Crown: dark brown or chestnut Bill: yellowish Shape: pointed Neck: black neck stripe reduced or lacking Throat: white Body: Belly: white Mantle: finely patterned brown Upperparts: streaked brown and white.

Size/Age/Growth

About 23 inches long, with a wingspan of 43 to 50 inches. Adults weigh about 25.6 ounces .

Habitat

American bitterns in California are found almost exclusively in emergent habitat of freshwater marshes and vegetated borders of ponds and lakes (Grinnell and Miller 1944). It usually hides, rests, and roosts solitarily amidst tall, dense, emergent vegetation , on the ground , or near ground on a log , stump , or on emergent plants. It does not normally perch in trees . It feeds in marshes, meadows, and along the edges of shallow ponds (Terres 1980). It also nests within emergent marshes within cattails, cordgrass, sedges, grasses, sedges of a wet meadow or marsh (Terres 1980).

Vegetation: freshwater marshes • Minimum Elevation: 1,500 meters • Maximum Elevation: 2,700 meters • Foraging Strata: Terrestrial • Center of Abundance: Lower subtropical: lowlands, lower than 500 m.; subtropics. • Sensitivity to Disturbancet: Medium

Typically found at an altitude of 0 to 3,664 meters (0 to 12,021 feet).[1]

Ecology: List of Habitats : 5.4 Wetlands (inland) - Bogs , Marshes, Swamps , Fens , Peatlands

Biology

[ Back to top ]

Diet

Forages within the emergent vegetation and shallow water of fresh or saline wetlands (Zeiner, et al. 1990). It feeds less often in adjacent shallow water of lakes , backwaters of rivers , or estuaries; and occasionally along adjacent shores. It feeds most actively at dusk or at night (Terres 1980), but also apparently at any time of day. It stands motionless and waits for prey , or stalks very slowly; it grasps the prey in the bill with a quick strike (Kushlan 1976b). It eats mainly insects, amphibians , fish, crayfish, and small mammals; also snakes , miscellaneous invertebrates , and birds.

Reproduction

The nest is a platform of matted , emergent aquatics , other herbaceous stems, sticks and/or leaves, usually in shallow water, but sometimes floating, or on the ground . It nests within the emergent vegetation and shallow water of fresh or saline wetlands (Zeiner, et al. 1990). Within the Prado Basin , the birds possibly breed in ponds with substantial tule/bulrush cover (L. Hays, pers. obs.). The timing of courtship and nest-building is unknown; eggs or young have ben reported April to July (Cogswell 1977). It is possibly polygamous, based on minimal evidence. It is basically a solitary nester , but is often in the vicinity of other pairs. The clutch size is usually 3-5, with a range of 2-6. It is apparently single-brooded. Incubation is about 24 days. The semi-altricial, downy hatchlings are apparently tended solely by the female, and remain in the nest about 2 weeks.

Migration

Migratory

Behavior

A year-long, circadian feeder , but most activity is crepuscular and nocturnal (Zeiner, et al. 1990).

In a slough in Saskatchewan, less than 16 ha (40 ac) in extent, there were five nests (Bent 1926). Distances between nests have been as little as 18 m (57 ft ) in Michigan (Middleton 1949), 37 m (120 ft) in lowa (Provost 1947), and 46 m (150 ft) in Minnesota (Vesall 1940). The territory is probably used mainly for courtship , copulation , and nesting; size is unknown (Palmer 1962).

Taxonomy

[ Back to top ]

Notes

Name Status: Accepted Name . Latest taxonomic scrutiny: 17-Oct-2001.

Similar Species

[ Back to top ]

Least Bittern, Yellow-Crowned Night Heron, Black-Crowned Night Heron

Members of the genus Botaurus

There are approximately 15 species in this genus:

B. hibbardi · B. lentiginosus (American Bittern) · B. lentiginosus montagu · B. lentiginosus peeti · B. melanotus · B. pinnatus (Pinnated Bittern) · B. pinnatus caribaeus · B. pinnatus pinnatus (Pinnated Bittern) · B. poiciloptilus (Australasian Bittern) · B. poiciloptilus mathewsi · B. pusillus · B. stellaris (Eurasian Bittern) · B. stellaris capensis · B. stellaris stellaris (Eurasian Bittern) · B. sturmi

More Info

[ Back to top ]

Further Reading

[ Back to top ]

Notes

[ Back to top ]

Contributors

Data Sources

Accessed through GBIF Data Portal March 10, 2008:

Identifiers

Footnotes

  1. Mean = 255.110 meters (836.975 feet), Standard Deviation = 378.970 based on 8,381 observations. Altitude information for each observation from British Oceanographic Data Centre. [back]
Last Revised: 2009-06-19