They also eat many other types of insects such as moths, beetles, weevils, and grasshoppers. The nest is constructed primarily by the female and is shaped into a well-formed cup made of fibers, fur, lichens, and spider's silk. Eggs are green-white and spotted with brown and gray. The black-headed grosbeak prefers open deciduous forests and is found throughout the western United states. Its diet consists mainly of large seeds but will often eat berries and insects.
Grosbeaks are somewhat tame and readily visit bird feeders during the spring and summer.
Nests are usually built in deciduous trees or shrubs bordering streams and rivers. Both the male and the female share the duty of incubation. The song of the black-headed grosbeak resembles that of the American robin. Chipping sparrows are one of the easier sparrows to identify. They have a bright chestnut-colored cap and a broad white line over each eye with a black line passing through the eye.