Field notes from December, when the chickadee numbers tell you whether the feeder is working.
The short version: winter feeding is a calorie problem, not a variety problem. A chickadee can lose 10% of its body weight overnight in sub-zero cold. Black-oil sunflower seed, suet, peanut butter, and peanut pieces are the four foods that put calories back fastest. Skip mixed seed bags - the milo and corn filler is dead weight when every gram of fat matters. Refill more often, clean more often, and the bird-survival numbers in your garden go up.
Why winter is different
A small songbird in winter has a single problem: keep the body 40°C through a night that’s well below freezing. Most species lose 5-10% of body weight overnight just shivering. That has to be replaced by mid-morning the following day, every day, all winter.
The implication for feeders: foods that work fine in summer (cheap mixed seed, millet alone) don’t work in winter because their calorie density isn’t high enough to refill the overnight deficit before the next cold night. Winter needs concentrated fat and oil.
The four foods that actually do the job:
- Black-oil sunflower seed - 28% fat, the right size for cracking.
- Suet (rendered beef fat, sometimes with seed mixed) - 90%+ fat.
- Peanut butter mix (unsalted, mixed with oats and seed) - 50% fat.
- Peanut pieces - 50% fat, smaller pieces for smaller birds.
A garden with these four available reliably will see noticeably more birds surviving a hard winter than a garden without.
1. Black-oil sunflower - the universal winter seed
The single bag every winter garden needs. The case is in best bird seeds in detail; the winter-specific points:
- 28% fat content - higher than striped sunflower, much higher than most other seeds.
- Thin shell makes it accessible to small finches and even chickadees.
- Eaten by almost every small-to-medium songbird in North America: chickadees, finches, sparrows, nuthatches, cardinals, woodpeckers, jays.
Refill rhythm in cold weather: every 3-4 days for a tube feeder serving an average garden. In a hard cold snap, daily.
Wagner's Black-Oil Sunflower 20 lb
The base winter seed for any back garden.
Black-oil sunflower is the most-eaten seed in North American garden feeding and the best calorie-per-gram return for the price. A 20 lb bag is a winter's supply for one hopper feeder. Store in a sealed metal bin (rodents chew plastic) somewhere dry; rancid sunflower seed is harmful to birds.
- Single ingredient - no milo, corn or wheat filler
- Thin shell that small finches can crack
- 20 lb resealable bag - the right size for a winter
- Taken by the broadest range of winter species
Wagner's · 20 lb
2. Suet - the woodpecker (and chickadee) calorie bomb
Rendered beef or sheep fat, often pre-blocked into cakes that drop into a wire suet cage or a drilled log feeder. 90%+ fat content - the highest-density bird food you can offer.
What it pulls in winter:
- All woodpeckers (downy, hairy, red-bellied, flicker)
- Both nuthatches
- Chickadees and titmice
- Brown creepers (rarely, but they show up)
- Bluebirds (in mild winters)
- Wrens (Carolina especially)
The right feeder shape is vertical and perchless - it favours clinging birds and excludes starlings, which have trouble clinging without a perch. A drilled hardwood log is the design that works best.
Songbird Essentials Suet Log Feeder
The vertical wood log that woodpeckers prefer to wire cages.
A hardwood log drilled with cups for suet or peanut butter. Woodpeckers, nuthatches and chickadees cling and chip the way they would on a real tree. No perches keeps starlings off; the log itself is the perch. Pack with commercial suet cake or homemade peanut butter mix.
- Solid hardwood, drilled cups, no plastic
- No perches - excludes most invasive birds
- Hangs from chain (included)
- Takes commercial suet or homemade mix
Songbird Essentials
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3. Peanut butter mix - the homemade winter staple
Pure peanut butter (the unsalted kind) is too sticky in cold weather, so we cut it with oats and seed. The mix:
- 1 cup natural unsalted peanut butter
- 1 cup rolled oats
- 1/4 cup mixed wild birdseed
- 2 tablespoons rendered suet or coconut oil
Warm the peanut butter and fat until they just loosen. Stir in the oats and seed. Press into a drilled log feeder or a pine cone. Lets birds work it without their bill-feathers gluing together.
The full method, plus why salted peanut butter is genuinely dangerous to passerines, is in feeding birds peanut butter. Don’t skip the post if you’re using peanut butter at the feeder - the salt issue is real.
4. Peanut pieces (whole if you have jays)
Smaller-than-whole peanut chunks, taken by chickadees, titmice, woodpeckers, nuthatches. Whole peanuts in shell are taken by Blue Jays - they’ll cache 50 a day if you let them.
Avoid: salted, dry-roasted, or anything sold for human snacking. Plain shelled peanuts only.
The cleaning rhythm in winter
Winter feeders need MORE cleaning, not less, despite the cold. Wet seed plus cold weather plus crowded birds is the disease scenario we covered in are bird feeders bad.
Every fortnight in winter:
- Empty the feeder.
- Hot soapy water, bottle brush, scrub all perches and ports.
- 1:9 vinegar-water solution for 10 minutes.
- Rinse, full air-dry overnight (use the airing cupboard if it’s freezing outside).
- Refill.
If a bird at your feeder looks fluffed, lethargic or has swelling around the eyes, take all feeders down for two weeks and clean thoroughly. That’s how trichomonosis spreading stops.
The placement question
A winter feeder works best in the lee of a wall or hedge, in morning sun, sheltered from prevailing wind, and within reach of dense cover but not touching it. The full placement breakdown is in best place for a bird feeder; the squirrel-defence in best squirrel-proof bird feeders.
The seed inventory for a working winter
If we were starting from scratch and building a winter feeding station:
- A 20 lb bag of black-oil sunflower seed in a hopper feeder
- A suet log on a tree trunk, filled with peanut butter mix
- A platform tray for ground-feeders (sparrows, juncos) with sunflower hearts and a little white millet
- A clean shallow water dish refreshed daily (use a heated bowl if temperatures drop below -5°C)
That covers 95% of the winter songbirds in any back garden across northern North America or the UK. The full feeder-station logic is in how to attract common backyard birds, and the chickadee-specific winter approach in how to attract Black-capped Chickadees.
DIY winter feeders
If you want to extend the budget, simple homemade feeders work alongside the commercial ones. See homemade winter bird feeders for the four DIY builds we’ve tested (drilled log, pine cone, half-orange shell, mesh stocking).
The bottom line
In winter, prioritise fat density over variety. Black-oil sunflower + suet + peanut butter mix + peanut pieces covers the full songbird guild and matches their actual metabolic need. Clean the feeders more often, refill more often, and store the seed properly - see bird seed shelf life for why a damp shed in November becomes a mouldy seed problem in January.
