Bachman's warbler (Vermivora bachmanii) is a possibly extinct passerine migratory bird.

[3] This warbler was a migrant, breeding in swampy blackberry and cane thickets of the Southeastern and Midwestern United States and wintering in Cuba.

[7] Bachman's warbler is a sexually dimorphic species and the adults have two distinct plumages, one in the spring and one in the fall.

[8] The bird's forecrown is black with gray at the edges, while the rear crown and nape are olive-gray.

[8] During the spring, adult females are a light yellow in their forehead and supraloral, blending into a gray crown and nape.

[9] The rest of the breast and the belly is light yellow, blending into white on the undertail coverts.

[9] For adult males, the fall plumage is nearly identical to the spring, with the only difference being that the forecrown changes from black to gray.

[9] First year males also resemble their spring plumage, but have an olive forecrown and duller yellow underparts.

[11] Multiple call notes have been recorded, ranging from a soft tsip to a low, hissing zee-e-eep.

[11] Bachman's warbler bred primarily in two distinct regions, namely the southern Atlantic coastal plain and the Gulf Coast states north along the Mississippi River watershed to Kentucky.

[12] The Gulf Coast breeding habitat is located primarily in central Alabama, though reports from northern Mississippi and Louisiana are known.

[13] These nests are made amongst blackberry brambles, cane stalks, and palmettos in bottomland forests 1 and 4 ft (0.30 and 1.22 m) above the ground or, frequently, pools of water.

[13] Unusually for a warbler, its eggs are pure white with occasional fine marks at the large end.

[5] Spring migration begins in late February and birds appear in south Florida and southeastern Louisiana by the first week of March.

[5] These warblers reach their South Carolina breeding grounds around mid-March, though some are known to arrive in late February.

[5] However, when clear-cutting began replacing selective logging, sightings of this species grew scarce.

[7] Individuals were reported from Fairfax County, Virginia, in 1954 and 1958, and a male was seen singing near I'on Swamp in April 1962.

A thorough and systematic search using playback of recorded Bachman's warbler songs did not reveal any territorial males and did not provoke any aggressive response from other bird species, and the survey leaders concluded the species was not present in the park during their search.

[16][17][18] John James Audubon's folio renderings of a male and female Bachman's warbler were painted on top of an illustration of the Franklinia tree first painted by Maria Martin, John Bachman's sister-in-law and one of the country's first female natural history illustrators.

In the comic strip Doonesbury, Dick Davenport, a bird watcher, died in 1986 of a massive coronary while observing and photographing this species, therefore proving its continued existence.

[19] Hurray for the Riff Raff mentions the species in the song “Buffalo” on the 2024 album The Past is Still Alive, comparing the possible eventual disappearance of the narrator and their partner to be similar to this bird’s.