Indigo Bunting

The Indigo Bunting breeds in brushy fields, forest edges, and roadside habitat across the eastern and central United States. Breeding males are an intense, uniform deep blue produced entirely through feather structure rather than pigment, appearing almost black in poor light, while females and non-breeding males are plain warm brown with faint streaking, showing none of the male's blue.

Size and Shape

Feathers are small and rounded, typical of a finch-like songbird, with no strong wing bars or tail patches.

Color and Pattern

• Breeding male feathers: uniform deep, iridescent blue over the entire body, sometimes appearing blackish without direct light
• Female and non-breeding feathers: plain warm brown with faint blurry streaking on the breast
• No white wing bars or tail patches in either sex

Distinguishing from Similar Species

A uniformly blue feather with no black, white, or patterned markings strongly suggests a male Indigo Bunting or a closely related bunting species; the Blue Grosbeak is larger with rusty wing bars, while the Indigo Bunting lacks any wing bar contrast entirely.

Breeding males are entirely iridescent blue; non-breeding males molt into a browner plumage with patches of blue retained, especially on the wings and tail; females are plain brown year-round with only faint streaking. Juveniles resemble females. Adults undergo two molts annually, a partial pre-breeding molt that produces the male's vivid blue plumage and a complete post-breeding molt into browner tones.

Indigo Buntings breed across the eastern and central United States and into southern Canada, favoring brushy fields, forest edges, overgrown pastures, and roadsides. The species is a long-distance nocturnal migrant, wintering from Mexico through Central America and the Caribbean, and is known to navigate in part using stellar cues learned as young birds.

This bunting feeds on seeds and insects, foraging low in shrubs and grasses, and shifts toward more insect prey during the breeding season to feed young. It builds a compact cup nest low in dense shrubs. The male's song is a distinctive series of paired, jumbled notes often described as "fire-fire, where-where, here-here," sung persistently from exposed perches through the heat of summer days when other songbirds have quieted.