here is how starlings are pests
i got this of of internet for yall and most of this as well happens to my area and yard with both starlings and sparrows
The European Starling is an exotic species that was introduced to North America in the 19th century. It’s now a permanent resident across the United States and Canada, almost always near areas of human habitation or areas with a reliable food source (near barns or granaries).
The European Starling is often considered a “problem” bird for several reasons:
It competes fiercely for nesting cavities, ousting such native birds as bluebirds and woodpeckers. It sometimes kills the original cavity-holding birds, and often destroys their eggs and young
It is aggressive at feeders, keeping smaller birds away and quickly exhausting birdseed supplies
Its enormous winter foraging flocks can be considered pests in agricultural areas
Its huge winter roosts present hygiene challenges in human-inhabited areas
Discouraging a flock of starlings from roosting around your house is difficult at best. Installing a plastic model hawk or owl in a tree is at best a short-term help. The birds will quickly realize it poses no threat and ignore it. A predator decoy in combination with another bird deterrent, such as a recording of starling distress calls broadcast through a speaker, may help a bit longer, but very often the birds habituate to the sound before you and your neighbors do. Unexpected loud noises may flush bird flocks from your trees. Some people use fireworks, or clang pots and pans together. Sometimes even just clapping your hands is enough to flush a starling flock. But they usually return quickly. If you are persistent, chasing them away every evening for a week or so, the flock may move to another roost. It’s easier to deal with starlings when they’ve first discovered a new roost location than after they’ve settled in.