Facts about Black-headed Grosbeak
- 08
Unlike most songbirds, Black-headed Grosbeaks can safely metabolize monarch butterflies, which contain toxic cardenolides that deter other predators.
- 07
In oak and pine forests across western North America, Black-headed Grosbeaks forage primarily on the ground and in lower vegetation, consuming seeds and berries that comprise up to 40 percent of their annual diet outside breeding season.
- 06
Across their range, Black-headed Grosbeaks exhibit striking plumage dimorphism, with males displaying bright orange-buff coloring while females present olive-yellow tones that provide camouflage during nesting.
- 05
Black-headed Grosbeaks consume up to 2,000 insects daily during breeding season to meet elevated energy demands for reproduction and chick-feeding.
- 04
Females of this species lay clutches of 3 to 4 eggs, incubating them for approximately 12 days before chicks fledge at roughly 11 to 13 days old.
- 03
The thick, conical bill of Black-headed Grosbeaks measures approximately 0.75 inches long, enabling them to crack open sunflower seeds and hard-shelled insects with exceptional force.
- 02
During spring migration, Black-headed Grosbeaks travel up to 3,000 miles from Central American wintering grounds to breeding territories in western North America.
- 01
Male Black-headed Grosbeaks sing approximately 15 to 20 distinct song types to establish territory and attract mates during breeding season.