Starlings are an omnivorous bird species which means that they feed on seeds, suet, crumbs, trash, fruit, and insects and grubs. These birds can become quite a nuisance by tearing through garbage while foraging for food and can damage agricultural fruit crops. Also, their feces can build up on a home and become corrosive and thus damaging the structure and/or can build up on the ground, leading to slip and fall injuries, not to mention the pathogens and fungus that grows in it.
Starlings like to perch and nest on gutters, especially clogged gutters because they provide an easy water source. These birds travel together in large flocks and can be found gathered on lawns feeding on insects in the grass. Starlings also like to feed at bird feeders, their aggressive nature means that they will drive other birds away from the feeders.