Feeding Bluebirds Bluebirds are ground feeders. They prefer to feed upon insects whenever available. Bluebirds perch above ground level to hunt for insects. When insects are not available, such as in the winter, they will feast upon fruit. Bluebirds will feed from trays on posts, window feeders, mealworm feeders and suet feeders.
Bluebirds are fond of peanut hearts and meal worms.
Like all backyard birds, bluebirds require a water source. All three species of bluebirds require semi-open land with short grasses and gardens that are surrounded by woodlands. They also require 2 acres of old fields, lawns or meadows. Bluebirds are secondary cavity nesters that use the cavity of abandoned woodpecker nests. Bluebirds will also build their nests in nesting boxes.