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Yes, birds can eat peanut butter — but only unsalted, unsweetened peanut butter with no palm oil and, most importantly, no xylitol. Cheap supermarket peanut butter often contains salt and sugar, and some “low-fat” versions contain xylitol, a sweetener that is highly toxic. Safest option: a jar labelled 100% peanuts, or bird-specific peanut butter sold by RSPB, CJ Wildlife or similar.
- Safe: 100% peanut butter (no salt, no sugar, no additives).
- Best: bird-specific peanut butter from a recognised UK supplier.
- Avoid: salted, sweetened, “low-fat” or “no sugar” versions containing xylitol.
- Fans: tits, woodpeckers, nuthatches, treecreepers, wrens.
- Never: serve straight from the jar in warm weather — it can smear feathers.
Why peanut butter works
Peanut butter is dense fat and protein — exactly what small birds need in winter. A blue tit that eats a few pecks of good peanut butter has taken on a serious chunk of its daily calorie need in seconds. Woodpeckers, treecreepers and nuthatches, all of which naturally probe bark for insects and fat, are especially quick to find it.
What to look for on the label
Read the ingredients, not the front of the jar. Bird-safe peanut butter should say:
- “100% peanuts” or “peanuts only”, or
- “For birds — no added salt or sugar” on a wildlife-brand jar.
Avoid anything with these on the label:
- Salt — even small amounts affect small birds far more than us.
- Sugar and glucose syrup.
- Xylitol or “contains sweeteners”. This is the critical one.
- Palm oil — an added fat, not a hazard as such, but nothing peanut butter should need.
Xylitol warning: xylitol is a sugar substitute added to some low-sugar peanut butters, sugar-free gum and diet spreads. It is highly toxic to dogs and there is real concern about its effect on wild birds, so any peanut butter labelled “no sugar”, “low sugar” or “contains sweeteners” should not go out for birds. Stick to plain 100% peanut butter or a wildlife-brand jar.
How to serve peanut butter to birds
- Smear it into the crevices of tree bark. This is how treecreepers and nuthatches will find it fastest, and it prevents any smearing on feathers.
- Push it into holes drilled in a small log. Hang the log up like a feeder. This is the “peanut butter log” idea sold by bird-food suppliers.
- Fill a coconut half — one of the classic garden-bird feeders.
- Buy the jar in a hanging feeder cage. Some bird brands sell peanut butter jars designed to slot into a cage feeder so birds peck through the top.
How not to serve peanut butter
- Not on a flat surface where birds might tread in it and get sticky feet or feathers.
- Not on hot summer days — it melts, runs and can smear onto feathers, damaging insulation and waterproofing.
- Not in giant amounts — a heaped tablespoon in a log feeder is plenty for a day; keep it fresh.
Pro tip: in cold, still weather it lasts several days. In wet or mild weather it can go rancid within a day or two — the smell is the giveaway.
Which birds eat peanut butter?
- Blue tit, great tit, coal tit, long-tailed tit — all keen.
- Great spotted woodpecker — a real favourite.
- Nuthatch — will visit any bark-smear or log feeder.
- Treecreeper — occasionally, on tree-bark smears.
- Wren — takes small pecks close to the ground.
- Robin — will nibble from crevices near the ground.
Peanut butter vs suet vs fat balls
| Peanut butter | Suet blocks | Fat balls | |
|---|---|---|---|
| Fat content | Very high | Very high | Very high |
| Cost per feed | Higher (per gram) | Mid | Cheapest |
| Ease | Log or bark smear | Cage feeder | Hanging holder |
| Best for | Bark-clinging birds | Everything | Starlings, tits, sparrows |
| Summer risk | Melts / rancid | Softens | Softens |
Common questions
Can I use Sun-Pat or a supermarket peanut butter?
Only if the ingredients list says peanuts only (or peanuts and a tiny amount of oil), with no salt, no sugar and no sweeteners. Anything labelled “no sugar”, “low sugar” or “reduced sugar” almost always contains a sweetener — check for xylitol first.
Is smooth or crunchy peanut butter better?
Either. Crunchy gives smaller birds a bit more texture to grip; smooth spreads more easily on bark.
Can I feed peanut butter in the summer?
Small amounts smeared into bark, out of direct sun, are fine. Never leave a big blob in hot weather.
Do squirrels take it?
Yes, they love it. Squirrel-baffled log feeders or a hanging feeder on a squirrel-proof pole are the fix.
Related guides
- Are peanuts safe for birds?
- How to make your own fat balls
- How to stop squirrels raiding bird feeders
- Can birds eat kitchen food?
Sources: RSPB and BTO guidance on garden bird foods and fats; veterinary and RSPCA guidance on xylitol toxicity; Birdcare Standards Association guidance on peanut testing.
Compare sunflower hearts and suet at Amazon UK. Prices and stock change often, so it is worth checking before you commit.
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