Published on September 19, 2026 • Last Updated on September 29, 2026
Northern Cardinals eat safflower seeds, and some grosbeaks, chickadees, doves and native sparrows use them too. That is a starting list for North American backyards, not a promise that every bird in those groups will visit your feeder. Local birds, feeder access and familiarity with the food change the result.
Start with the birds you already see
Cornell’s guide to birdseed identifies cardinals as particularly fond of safflower and notes its thick shell. A tray or hopper is a practical starting point for cardinals and grosbeaks. Check that birds can perch and reach the seed comfortably before assuming they dislike it.
For a yard already visited by cardinals, a small safflower trial answers a useful question: will those birds use another food here? For a yard with no cardinals, an untouched feeder cannot tell you whether cardinals dislike the seed. They may simply be absent. Avoid buying a large bag solely because a species appears on a list.
A small trial is more useful than replacing every feeder
Keep your established food available and offer a modest amount of safflower separately. This adapts a familiar feeding setup without making every quiet morning a mystery. Mixing seeds is an option, but separate food is easier to observe: you can see which seed a bird actually takes.
Use the following observation record for several comparable sessions. The ten-minute window is a convenient bookkeeping choice, not a scientifically validated sampling requirement. This is a household decision aid, not a controlled feeding study.
Copy this feeder observation record
Date and ten-minute observation window: Record when you watched, weather, feeder position and any unusual disturbance.
Safflower: List species you actually saw taking seed. Mark uncertain identifications as uncertain. Note intact seed left behind and visible waste.
Established food: Record whether birds used it during the same window. Do not treat repeated visits as a count of different individual birds.
One change for the next session: Write down either “no change” or the single feature you will alter, such as access to the seed. Keep basic hygiene constant.
Read the result without overclaiming
Both feeders are quiet: You have little evidence about safflower preference. Revisit the comparison when birds are using the feeding area; adding more seed will not make the observation more informative.
The established food is busy, but safflower is untouched: First check whether the intended visitors can use both feeders. Different feeder designs or positions confound the comparison. If access is comparable and the pattern repeats, keep buying the food that is actually being used rather than forcing a switch.
Some species take safflower and others do not: Record those species separately. “The birds like it” hides the distinction that helps you decide whether this food serves your goal.
The seed level falls without observed feeding: Check for spillage and other visitors before crediting your target birds. A lower seed level alone does not identify who ate it.
Safflower does not guarantee squirrel exclusion
Cornell cautions that House Sparrows, European Starlings and squirrels sometimes acquire a taste for safflower. Switching seed is therefore a food trial, not a reliable exclusion system. If squirrels remain the main visitors, work on feeder access and squirrel barriers rather than repeatedly buying different seed.
If your goal is attracting small finches, compare the practical role of nyjer and its feeder setup instead of assuming safflower suits every seed-eating species.
Which birds are most likely to try safflower?
Project FeederWatch describes safflower as a food that can attract cardinals and other larger, strong-billed feeder birds, while also noting that many birds prefer sunflower seed. That makes safflower most useful as a targeted trial, not as an automatic upgrade for every backyard feeder.
If your goal is broad feeder traffic, compare it with black-oil sunflower seed. If the problem is that the wrong species dominate an open tray, changing the feeder design can matter as much as changing the seed.
Keep the trial clean and small
Do not leave uneaten seed indefinitely while waiting for acceptance. Discard spoiled food and keep the feeding area tidy. Project FeederWatch’s current guidance recommends cleaning seed feeders regularly—roughly every week or two, more often in wet weather or heavy use—and drying them fully before refilling. Choose a feeder you can wash thoroughly.
Continue safflower only if the birds you want to support use it and you can keep the setup clean. A small, observed success is a better reason to buy more than a long species list or a “squirrel-proof” claim.
Sources & Further Reading
- Project FeederWatch — Safflower
- Project FeederWatch — Feeding Birds
- Cornell Lab / All About Birds — Types of Bird Seed
Jonathan Gron is the founder and editor of OwlRatings, where he researches birding, backyard wildlife and practical bird-safety guidance using current primary, government and professional sources.
