The most effective way to deter starlings without driving off other birds is a combination of food choices they can’t eat, feeders they can’t use, and nest boxes they can’t enter. Because European starlings are an invasive species with no federal protection under the Migratory Bird Treaty Act, you have more legal options for managing them than you do for nearly any other bird in North America.
Starlings are generalist feeders that show up in large, aggressive flocks, especially from fall through early spring. They bully native songbirds at feeders, take over nesting cavities, and can strip a suet cage in hours. The good news is that starlings have specific physical limitations you can exploit, and the birds you actually want to attract can work around every one of these tactics.
Switch to Foods Starlings Can’t Handle
The single biggest change you can make is swapping your seed mix. Starlings have softer, more slender bills than most native feeder birds. They lack the beak strength to crack hard shells, which gives you several options that songbirds handle easily.
Safflower seed is the go-to swap. Its hard shell defeats most starlings, and they’ll generally ignore it. Cardinals, house finches, and doves eat safflower readily. In extreme cold, a few desperate starlings may pick at it, but it won’t attract the mob-feeding behavior you’re trying to stop.
Whole peanuts in the shell work on the same principle. Starlings can’t crack them open, but jays, woodpeckers, and titmice can. If you’ve been offering shelled peanuts or peanut pieces, switching to whole peanuts is a simple fix.
Pure rendered suet with no added nuts or fruit (sometimes sold as “simply suet”) has very little appeal to starlings. Woodpeckers still enjoy it. Most commercial suet cakes are loaded with seeds, fruit, and peanut bits that starlings love, so check the ingredients. The plainer the suet, the less interesting it is to them.
What to stop offering: starlings are drawn to soft foods they can swallow quickly. Bread, kitchen scraps, cracked corn, millet mixes, and fruit-laden suet cakes are all starling magnets. Standard black oil sunflower seed is somewhat less attractive to them than these, but sunflower chips (already hulled) are easy for starlings to eat and worth removing if flocks are a problem.
Use Feeders That Exploit Starling Anatomy
Starlings are clumsy upside down. Woodpeckers, nuthatches, and chickadees feed in that position naturally (nuthatches are famous for it), but starlings and grackles struggle to hang beneath a feeder and eat at the same time. An upside-down suet feeder, where the suet cage sits under a roof and the bird must cling beneath it, lets your desired birds eat in peace while starlings give up quickly.
Caged tube feeders are another strong option. These surround a standard tube feeder with a wire cage that has openings large enough for chickadees, finches, and sparrows but too small for a starling’s bulkier body. The same design blocks grackles and sometimes squirrels.
Weight-sensitive feeders close their feeding ports when a heavier bird lands on the perch. Starlings weigh roughly 75 to 100 grams, about double the weight of most finches and chickadees, so a feeder calibrated to shut at that threshold will lock them out while staying open for smaller songbirds. These feeders are widely available and adjustable.
Protect Nest Boxes With the Right Hole Size
Starlings are aggressive cavity nesters. They’ll evict bluebirds, swallows, and even woodpeckers from nesting holes, destroy eggs, and kill chicks. If you maintain nest boxes, entrance hole size is your best defense.
A round entrance hole of 1½ inches in diameter is the standard recommendation for Eastern Bluebird boxes. Starlings cannot fit through it. The North American Bluebird Society notes that some monitors use a 1 9/16-inch hole, since no additional pest species can enter at that size that couldn’t already enter a 1½-inch hole. For Western and Mountain Bluebirds, a 1 9/16-inch round opening or a 1 3/16-inch horizontal slot works.
Oval entrance holes (1⅜ by 2¼ inches) are another option, and bluebirds seem to prefer them. However, the dimensions need to be precise. If the oval is even slightly off, smaller starlings may squeeze through. If you go this route, measure carefully during construction.
Even with proper hole sizes, starlings will sometimes harass nest boxes from the outside, perching on the roof or blocking the entrance. Mounting boxes away from trees and fences (which starlings use as staging perches) and adding a predator baffle below the box can reduce this behavior.
Block Starlings From Buildings and Structures
Starlings nest in vents, eaves, soffits, and any gap in a building’s exterior. If they’re nesting in your home or outbuildings, physical exclusion is the permanent solution.
Bird netting designed for starlings uses a 28mm (roughly 1⅛-inch) mesh gap, small enough to block starlings while remaining nearly invisible from a distance. Commercial-grade netting is made from UV-treated polyethylene that resists sun damage, stretching, and moisture. It works well over open areas like loading docks, courtyards, or garden structures where starlings roost.
For vents and small openings, galvanized steel mesh or hardware cloth with ½-inch openings is more practical. Cover dryer vents, bathroom exhaust vents, and any gap wider than 1 inch. Do this in early spring before nesting begins, or in late summer after fledglings have left. If you seal an opening with active nests inside, trapped birds will die in your walls.
Time Your Efforts to Starling Seasons
Starling pressure isn’t constant throughout the year. Understanding their seasonal patterns helps you know when to escalate your tactics and when you can relax them.
Fall and winter are peak flock season. Starlings gather in enormous groups, sometimes thousands strong, and descend on food sources together. If you’re in a region that receives migrating starlings (they move south and west in September and October, returning in February and March), your feeder problems will be worst during these months. This is when switching to safflower and pure suet matters most.
Spring brings nesting season, typically March through June. This is when starlings compete most fiercely for cavities and when your nest box dimensions become critical. Monitor boxes regularly during this period. Because starlings have no federal protection, you can legally remove their nesting material from boxes and structures. Native birds’ nests are protected, so be certain of species identification before disturbing anything.
Summer is the lightest period for starling conflict. Adults are busy feeding insects to nestlings, and the large winter flocks haven’t reformed yet. You may be able to offer a wider variety of foods at your feeders during July and August without attracting starling mobs.
Combining Tactics for Best Results
No single strategy eliminates starlings completely. They’re intelligent, adaptable birds that have thrived across North America precisely because they exploit a wide range of food and shelter. The most effective approach layers multiple deterrents: safflower and whole peanuts in caged or weight-sensitive feeders, upside-down suet holders with plain suet, properly sized nest boxes, and physical barriers on your home.
Start with the food changes, since that’s the easiest and has the biggest immediate impact. Starlings visit your yard primarily because you’re feeding them something they like. Remove that incentive, and many will simply move on. The ones that persist can be dealt with through feeder design and structural exclusion. Within a few weeks of consistent changes, you should see a noticeable shift in which birds are showing up and which have stopped bothering.