The bluebirds are
a group of medium-sized, mostly insectivorous or omnivorous bird in the order of Passerines in the genus Sialia of the thrush family. Bluebirds are attracted to platform bird
feeders, filled with grubs of the darkling beetle, sold by many online bird
product wholesalers as mealworms. Bluebirds will also eat raisins soaked in water. In
addition, in winter bluebirds use backyard heated birdbaths. Source
