2015年6月13日 · You'll need sharp eyes to catch sight of an American Bittern. 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.

Bitterns tend to be shorter-necked and more secretive than other members of the family. They were called hæferblæte and various iterations of raredumla in Old English; the word "bittern" came to English from Old French butor, itself from Gallo-Roman butitaurus, a compound of Latin būtiō (buzzard) and taurus (bull). [1]

You'll need sharp eyes to catch sight of an American Bittern. 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 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. 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).

Audubon’s scientists have used 140 million bird observations and sophisticated climate models to project how climate change will affect the range of the American Bittern. Learn even more in our Audubon’s Survival By Degrees project.

Its brown-striped and buff-flecked plumage provides effective camouflage amidst the reeds and tall grasses where it hides; to add to its disguise, the bittern stretches its neck and bill skyward and sways from side to side, imitating waving reeds. But it's the American Bittern's voice that makes it truly remarkable:

The Bittern is a thickset heron with pale, buff-brown plumage covered with dark streaks and bars. It flies on broad, rounded, bowed wings. A secretive bird, very difficult to see, as it moves silently through reeds at water's edge, looking for fish.

American Bitterns are solitary foragers, standing motionless or walking slowly with outspread toes in search of food. They hunt during the day and especially at dawn and dusk. Possibly the most famous aspect of bittern behavior is the stance it assumes when it perceives a threat.

Stocky, brown heron found in marshes and bogs. Usually secretive and difficult to see, but occasionally found in the open. Most similar to juvenile night-herons. Note striped neck, plain unspotted wings, and even more secretive behavior of bittern. Most active around dawn and dusk, when it might be seen flying low over extensive marshes.

Bittern, any of 12 species of solitary marsh birds of the subfamily Botaurinae, family Ardeidae (order Ciconiiformes), allied to the herons (subfamily Ardeinae) but with shorter neck and stouter body.