Crimes committed: Starlings are frequently considered pests or annoying because of the problems they make, especially at livestock facilities and near urban roosts Starlings may selectively eat the high-protein supplements that are often added to livestock rations Starlings also are responsible for transferring disease from one livestock facility to another Identifying Characteristics: Starlings are robin-sized birds weighing about 3.2 ounces Adults are dark with light speckles. The speckles may not show at a distance The bill of both sexes is yellow during the reproductive cycle and dark at other times. Juveniles are pale brown to gray. Last seen: The European Starling was introduced into North America