Which backyard birds eat or avoid safflower seed in your feeder

Part of our guide on white proso millet bird seed

Safflower turns your feeder into a selective buffet where cardinals thrive and grackles leave hungry.

Which backyard birds eat safflower seed

Cardinals eat safflower more consistently than any other backyard bird. They crack the shell in seconds and often choose safflower over sunflower once they recognize it. Northern cardinals, both male and female, visit safflower feeders throughout the day, especially in early morning and late afternoon.

Chickadees and titmice take safflower readily. Black-capped chickadees, Carolina chickadees, and tufted titmice grab one seed, fly to a branch, hold it with their feet, and hammer it open. They cache safflower seeds in bark crevices the same way they do sunflower.

Nuthatches prefer safflower to most other seeds except black oil sunflower. White-breasted and red-breasted nuthatches wedge safflower into bark and chisel it open. You'll see them working upside-down on a trunk with a seed in their bill.

House finches eat safflower without hesitation, though they take longer to crack it than cardinals do. Purple finches eat it too, but they're pickier and will leave for sunflower if both are available. Goldfinches ignore safflower entirely: they lack the bill strength to open it and prefer nyjer or sunflower chips. We go through benefits of nyjer seed step by step elsewhere on the site.

Mourning doves eat safflower from platform feeders and the ground. They swallow the seeds whole, shell and all, and grind them in their gizzard. You'll often find a pair of doves under a safflower feeder at dawn, cleaning up what the cardinals dropped.

Grosbeaks crack safflower easily when they pass through during migration. Rose-breasted and black-headed grosbeaks have massive bills and treat safflower like a snack. Evening grosbeaks eat it less often, preferring sunflower when both are offered.

Which birds avoid or reject safflower seed

Grackles avoid safflower almost completely. Common grackles land on a safflower feeder, pick up one seed, drop it, and leave. The bitter coating on safflower seeds repels them, and they won't waste time cracking something they find unpalatable. A flock of 40 grackles that empties a sunflower feeder in an hour will leave a safflower feeder untouched. We go through three tube bird feeders for outdoors step by step elsewhere on the site.

Blackbirds and cowbirds reject safflower for the same reason. Red-winged blackbirds, brown-headed cowbirds, and Brewer's blackbirds taste the seed, spit it out, and move on. In spring, when blackbird flocks descend on feeders, switching to safflower clears them out in a day or two.

Starlings ignore safflower. European starlings probe feeders looking for suet, mealworms, or soft food, and safflower doesn't interest them. They can't crack the shell efficiently, and the taste keeps them from trying twice.

Jays eat safflower only when nothing else is available. Blue jays prefer peanuts and sunflower, and they'll cache those first. If your yard offers both, jays take sunflower and leave safflower behind. Scrub-jays and Steller's jays behave the same way.

Sparrows split on safflower. House sparrows ignore it completely: they lack the bill strength to open it and find the taste unpleasant. Native sparrows like white-throated, white-crowned, and song sparrows also skip safflower, sticking to millet on the ground.

Woodpeckers rarely touch safflower. Downy, hairy, and red-bellied woodpeckers visit feeders for suet, sunflower, and peanuts, but they bypass safflower even when it's the only seed available. The seed is too small and the effort-to-reward ratio doesn't work for them.

Why safflower deters some species but not others

Safflower seeds have a bitter coating made of compounds that taste unpleasant to many birds. The bitterness doesn't harm birds: it's a natural defense the plant evolved to discourage certain seed predators. Cardinals, chickadees, and nuthatches tolerate the taste because the kernel inside is high in fat and protein, making the effort worthwhile.

Grackles, blackbirds, and starlings have taste receptors that make them more sensitive to bitter compounds. They sample a safflower seed, detect the coating, and reject it. These species prefer softer, sweeter seeds like cracked corn, millet, and sunflower, which they can process quickly in large quantities.

Bill strength and shape also determine which birds eat safflower. Cardinals have short, conical bills built for cracking hard seeds. Grackles have longer, pointed bills adapted for probing and grabbing soft food, not for applying the focused pressure needed to split a safflower shell. Starlings have even weaker bills and can't crack safflower at all.

Squirrels avoid safflower for the same reason grackles do. Most eastern gray squirrels, fox squirrels, and red squirrels taste safflower once and leave it alone. The bitter coating lingers, and squirrels prefer sunflower, corn, and peanuts. A small percentage of individual squirrels develop a tolerance and will eat safflower, but it's rare.

Do cowbirds and blackbirds eat safflower seed

Brown-headed cowbirds do not eat safflower. Cowbirds are small blackbirds with short, conical bills, similar in size to a house finch. They prefer millet, cracked corn, and sunflower chips scattered on the ground. When cowbirds land on a safflower feeder, they peck at the seeds, find them bitter, and fly off within seconds.

Red-winged blackbirds avoid safflower just as consistently. In spring, when mixed flocks of red-wings, grackles, and cowbirds swarm feeders, safflower is the fastest way to clear them out. A hopper full of safflower will sit untouched while sunflower disappears in minutes.

Blackbirds have a feeding strategy that relies on volume. They move in flocks, hit a food source hard, and move on. Safflower doesn't fit that strategy because the bitter taste and hard shell slow them down. They'd rather spend energy finding a feeder with sunflower, suet, or corn than waste time on safflower.

If you're dealing with spring blackbird invasions (flocks of 50 to 200 birds emptying feeders daily) switch to 100% safflower for two to three weeks. The flocks will visit once, find nothing they want, and skip your yard on their next pass. Cardinals and chickadees will still feed normally.

How to use safflower seed in your feeding setup

Use a hopper or platform feeder for safflower. Cardinals and doves need perches at least 3 inches long to land, balance, and crack seeds. Tube feeders work for chickadees and titmice but exclude cardinals, which defeats the main reason to use safflower. A hopper with a wide tray gives you the most species.

Don't mix safflower with sunflower unless you're transitioning birds to safflower. Mixed seed gives grackles and jays a reason to visit, and they'll pick out the sunflower and leave the safflower behind. If you want selective feeding, run 100% safflower in one feeder and 100% sunflower in another, placed at least 20 feet apart.

Expect a learning period of 3 to 10 days when you first offer safflower. Cardinals that are used to sunflower will land, inspect the new seed, and leave. They'll return the next day, try one, and figure it out. Chickadees adapt faster, usually within a day or two. Once birds recognize safflower as food, they visit as reliably as they do sunflower feeders.

Clean safflower feeders every two weeks. Safflower shells are thicker than sunflower shells, and they pile up faster below the feeder. Wet shells turn moldy within a week in humid climates. Brush out the feeder tray, dump the shells, and refill. In summer, when humidity is high, clean weekly.

Safflower costs $1.20 to $1.80 per pound depending on your region and whether you buy in bulk. That's roughly 30 to 50 percent more than black oil sunflower, which runs $0.80 to $1.20 per pound. The cost is worth it if you're spending $40 a week on sunflower that grackles empty in two days. A 25-pound bag of safflower lasts a month in a typical backyard setup with cardinals, chickadees, and doves.

• Hopper feeders: best all-around choice for safflower; accommodates cardinals, doves, and smaller birds on the same perches
• Platform feeders: good for doves and ground-feeding birds; easy to clean but exposed to weather
• Tube feeders with large ports: work for chickadees and house finches; exclude cardinals unless perches are added below
• Ground feeding: doves and juncos will eat spilled safflower, but avoid broadcasting it intentionally; wet shells mold fast

When safflower is worth using and when it's not

Use safflower if grackles, blackbirds, or starlings overwhelm your feeders in spring or fall. A flock of 50 grackles can empty a 10-pound hopper of sunflower in a single afternoon. Switch to safflower and the flock moves on in a day, leaving your feeders to cardinals and chickadees. The cost difference pays for itself in saved seed.

Safflower works when squirrels are a problem but not your only problem. Most squirrels avoid it, which saves seed and reduces gnawed feeders. If squirrels are eating everything regardless of taste, safflower alone won't fix it: you'll still need a baffle or a weight-sensitive feeder. But if squirrels are moderate raiders rather than relentless ones, safflower often tips the balance.

Don't use safflower if your goal is to attract the widest variety of birds. Goldfinches, pine siskins, juncos, and native sparrows ignore safflower, and jays bypass it. If you want diversity, stick with a mix of sunflower, nyjer, and millet. Safflower narrows your visitor list to a core group of cardinals, chickadees, titmice, and doves.

Skip safflower if you're feeding in an area with few cardinals or nuthatches. In parts of the Southwest, West Coast, and high-elevation regions, cardinals are absent or rare, and the species that do visit prefer sunflower, peanuts, or suet. Check your local bird population before buying a 25-pound bag of safflower that nobody eats.

Safflower is not a magic solution for house sparrows. House sparrows ignore safflower, which is good, but they also ignore most hopper feeders in favor of ground feeding and suet. If house sparrows are your main pest species, safflower helps by removing the seed they want, but you'll still need to manage spilled seed and switch to feeders they can't perch on.

Questions people still ask

I switched to safflower in March after grackles emptied my feeders every afternoon, and the difference was immediate: cardinals stayed, grackles left, and my seed bill dropped by half.