Black-headed Grosbeak

The Black-headed Grosbeak (Pheucticus melanocephalus) is a medium-sized, heavily built songbird in the cardinal family (Cardinalidae). A common summer resident across western North America, this species is highly regarded for both its vibrant plumage and its sweet, rolling song. Characterized by an exceptionally thick, conical bill designed for crushing tough seeds, this grosbeak is also notable for its ecological tolerance to certain toxic insects and its active visitation of backyard feeders during migration and breeding seasons.

Putative Features

• Size & Shape: A stocky, short-tailed songbird with a very large, thick, cone-shaped bill and a bulky neck.
• Adult Male: Features a pitch-black head, black wings and tail heavily marked with white spots and wingbars. The breast, rump, and collar are a rich, warm cinnamon-orange, fading to a bright yellow belly. Underwing linings are a striking lemon-yellow, which is highly visible in flight.
• Adult Female & Immature: Drabber but still distinctive. They have brownish-gray upperparts with dark streaks, and a warm cream or buff breast with light streaking along the flanks. The head is boldly patterned with blackish and white stripes, including a prominent white stripe over the eye (supercilium) and a central crown stripe.
• Bill: The heavy, conical bill is grayish-horn colored, darker on the upper mandible and lighter below.

Similar Species

• Rose-breasted Grosbeak (Pheucticus ludovicianus): In mid-continent areas where their ranges overlap, these two species frequently hybridize. Male Rose-breasted Grosbeaks have a jet-black head and back with a bright rose-red patch on a pure white chest. Female Rose-breasted Grosbeaks are very similar to female Black-headed Grosbeaks but are typically more heavily striped underneath and lack the warm buffy-orange wash across the breast.

Habitat & Distribution

The Black-headed Grosbeak breeds primarily in deciduous and mixed forested areas, oak woodlands, streamside cottonwood groves, thickets, and coniferous forests at lower to mid-elevations. They are highly adaptable and frequently occupy suburban parks and residential gardens with ample tree cover.

Range & Migration

• Breeding Range: Extends from southern British Columbia and Alberta southward through the western half of the United States to central Mexico.
• Winter Range: They are medium-distance migrants, wintering almost entirely in the mountains and lowlands of Mexico.
• Migration: They depart breeding grounds in late summer and early fall, traveling south primarily along montane and riparian corridors.

Feeding & Diet

With their massive bills, Black-headed Grosbeaks feed on a wide variety of beetles, caterpillars, scale insects, and spiders. They are famously one of the few bird species capable of consuming poisonous Monarch butterflies on their Mexican wintering grounds, discarding the toxic wings and consuming the abdomens. They also feed heavily on seeds, wild berries, cherries, and oats, and readily visit tube and platform feeders for sunflower seeds.

Vocalizations

• Song: A rich, sweet, and fluid series of warbles and trills. It sounds very similar to an American Robin but is faster, more energetic, and noticeably more joyful and polished.
• Call: A sharp, metallic, high-pitched spik or peek, used frequently by both sexes as a contact and alarm note.

Breeding & Nesting

Unusually for songbirds, both the male and female Black-headed Grosbeak share incubation and nestlings duties. Males will even sing while sitting on the nest to incubate the eggs. The nest is a loosely woven cup of twigs, rootlets, and grasses, usually built 3 to 25 feet high in a deciduous tree or dense shrub. The typical clutch contains 2–5 pale blue or green eggs, heavily speckled with reddish-brown.