Accented with wood-slatted porches and bright water dishes, these mid-century modern birdhouses by Douglas Barnhard give avian neighbors with particular aesthetic sensibilities a reason to flock home. Barnhard, who’s behind the Santa Cruz-based company Sourgrassbuilt, builds the succulent-studded abodes from bamboo, cedar, teak, and glossy laminate. With clean lines and angular features, they emulate the architecture pioneered by Joseph Eichler, Frank Lloyd Wright, and the Bauhaus.