American Redstart

AT A GLANCE
Common Name: American Redstart
Scientific Name: Setophaga ruticilla
Category: Birds
Subcategory: Wood Warblers
Size: Length 11 to 13 cm (4.3 to 5.1 in); wingspan 16 to 19 cm (6.3 to 7.5 in)
Weight: 6 to 9 g (0.21 to 0.32 oz)
Lifespan: 4 to 7 years in the wild
Diet: Insectivorous / Aerial forager (flying midges, caterpillars, beetles, leafhoppers, and small spiders)
Habitat: Deciduous forest canopies, riverbank woodlands, and secondary hardwood forests
Range: North America breeding; Neotropical wintering
Conservation Status: Least Concern (IUCN Red List)

Overview

The American Redstart (Setophaga ruticilla) is a hyperactive, acrobatic wood warbler known in Spanish folklore as ‘Candelita’ (little torch) for its dazzling flashes of fiery orange-red wing and tail patches. Flitting tirelessly through the deciduous canopies of eastern North America, this butterfly-like avian predator uses flamboyant tail-fanning displays to flush insects from hiding, snapping them out of midair with flycatcher-like precision.

Biology and Physical Characteristics

Adult males are striking and unmistakable, clad in jet-black plumage contrasted sharply against brilliant flame-orange patches on the sides of the breast, wings, and tail, set above a clean white belly. Females and immature males replace black with olive-grey and trade orange for glowing lemon-yellow patches. Its broad, flat bill is fringed with prominent rictal bristles that help channel flying insects into its mouth.

Behavior and Ecology

A relentless aerial forager, the American Redstart moves with dizzying speed through tree canopies, constantly drooping its wings and fanning its broad tail wide in a technique called ‘flash-pursuit.’ The sudden startling burst of bright orange and white against dark foliage terrifies resting insects into taking flight, allowing the redstart to dart after them with instantaneous acrobatic twists.

Conservation and Human Impact

Assessed as Least Concern by the IUCN, the American Redstart remains one of the most abundant and widespread warblers in North America. Long-term studies at wintering grounds in Jamaica have revealed that habitat quality in the tropics directly dictates spring arrival dates and nesting success on northern breeding grounds.

Interesting Factoid

Cuban and Venezuelan locals call the American Redstart ‘Candelita’ (little torch) because as it darts through dark rainforest understories, its sudden flashes of bright orange tail and wing feathers look like flying sparks of fire.