Indigo Bunting

The Indigo Bunting is a small, vivid songbird whose breeding male appears an intense, uniform blue from head to tail, sometimes looking almost turquoise in bright sun or nearly black in shade. This vivid color is entirely structural, produced by light scattering off the microscopic structure of the feathers rather than by any blue pigment, meaning a molted blue feather held up to transmitted light actually appears black. Females and immature birds are a plain, warm brown overall, with faint streaking on the breast and sometimes a hint of blue on the wings or tail.

Indigo Buntings are a common summer sound of brushy field edges and roadsides across the eastern and central United States, where males sing persistently, even through the heat of midday, from exposed perches.

Key Field Marks

• Adult breeding male: entirely deep blue, brightest on the head, appearing turquoise or nearly black depending on light
• Non-breeding male: mottled brown-and-blue patchwork during molt
• Female/immature: plain warm brown, faint breast streaking, small conical bill
• Small, compact size with a short, thick, conical bill

Similar Species

• Blue Grosbeak is larger with a much heavier bill and rufous wingbars.
• Lazuli Bunting males have a blue head/back with an orange-buff breast and white belly, distinct from the all-blue Indigo Bunting male; the two species hybridize where ranges overlap in the Great Plains.
• Female Indigo Buntings can resemble female sparrows but have a smaller, more conical bill and lack strong head striping.

Habitat

Favors brushy old fields, forest edges, overgrown pastures, power-line cuts, and roadsides with scattered shrubs and saplings.

Range

Breeds across the eastern and central United States and southeastern Canada. Winters from Mexico through Central America and the Caribbean to northern South America.

Migration

A long-distance nocturnal migrant known for using celestial cues, including the pattern of stars around the North Star, to navigate; young birds learn this star map by observing the night sky before their first migration.

Behavior

Males sing persistently through the day, even in the heat of summer afternoons when many other songbirds fall silent, often from a high, exposed perch.

Voice

The song is a bright, cheerful series of paired, warbled phrases, often described as sounding like the bird is saying each phrase twice; sweet-sweet, chew-chew, sweet-sweet. The call is a sharp, dry "spit" note.

Feeding

Feeds on seeds, berries, and insects, foraging low in vegetation and on the ground; readily visits feeders offering small seeds like nyjer.

Nesting & Breeding

The female builds a compact cup nest low in a shrub or dense grass, usually within a meter or two of the ground. She incubates 3-4 eggs alone, and the species is a frequent Brown-headed Cowbird host.