Bird Food

How Much Seed a Feeder Uses

A single busy tube feeder gets through more seed in a winter than most people expect, and the difference between a cheap year and an expensive one is mostly waste, not price.

People are almost always surprised by their first winter seed bill. A feeder that looked like a small hobby purchase in October is eating a 40 lb (18 kg) bag every two or three weeks by January, and the arithmetic only becomes visible once you have bought four of them.

There is no single answer to how much seed a feeder uses, because consumption depends on how many feeders you run, how many birds your neighborhood holds, what season it is, how much falls on the ground, and how many squirrels you are quietly subsidizing. What you can do is bracket it. The ranges below are wide on purpose, and a yard at the top of a range is usually a yard with a waste problem rather than a yard with more birds.

Every price on this page is an approximate 2026 United States retail figure for seed bought in a 20 to 40 lb (9 to 18 kg) bag. Seed is an agricultural commodity: sunflower and nyjer prices move year to year with harvests, fuel and freight, and a 5 lb (2.3 kg) bag from a grocery store can cost twice the per-pound figure shown. Use the arithmetic, not the exact numbers.

What actually drives consumption#

Five things account for most of the variation between two yards on the same street.

• Feeder count. Each additional feeder adds birds rather than splitting the same ones, which is the whole point of running multiple feeders and also why the bill scales faster than you expect.
• Season. Winter demand is typically three to five times summer demand, because birds need more calories, days are short and insects are gone.
• Region and habitat. A yard backing onto woodland in the upper Midwest supports far heavier winter traffic than a small urban lot in the Southwest. The regional guides give a sense of local flock sizes.
• Waste. Seed kicked out by finches, blown out of an open tray, or emptied by squirrels is bought seed that no bird eats. This is where most of the money goes in an expensive yard.
• Seed choice. Filler-heavy mixes are cheap per pound and expensive per pound eaten, which is the single biggest hidden cost in backyard feeding.

Volume-to-weight matters when you are converting a feeder's stated capacity into pounds. A quart of black oil sunflower weighs roughly 0.8 lb (0.36 kg), a quart of sunflower hearts closer to 1.3 lb (0.6 kg), and a quart of millet or cracked corn about 1.4 lb (0.64 kg). A tube sold as a 2 quart feeder therefore holds under 2 lb (0.9 kg) of black oil sunflower, which is less than it sounds. Feeder capacity goes into this in more detail.

Typical consumption ranges#

These are ranges seen in ordinary suburban yards, not measurements from this site, which does not run experiments. Find the row closest to your setup and expect to land somewhere inside it.

If your feeder is emptying much faster than the top of its row, the cause is nearly always mechanical rather than ornithological: squirrels, a leaking port, seed blowing out, or a design that lets birds sweep unwanted seed onto the ground. The empty feeder mystery covers how to work out which.

What seed costs per pound in 2026#

Approximate United States retail, bought in a 20 to 40 lb (9 to 18 kg) bag from a farm store, hardware store or wild bird retailer. Grocery store small bags run substantially higher, and these figures are moving targets. Cheap bulk foods such as cracked corn and white millet only make sense if you have ground feeders to eat them, and safflower and nyjer buy you specific things rather than general value.

Worked example: one feeder and a suet cage#

A single sunflower tube in a moderately busy suburban yard, plus one suet cage running from October to April. Round numbers, black oil sunflower at $1.30 per lb, suet cakes at $2.25 each.

• Winter, 18 weeks at 3 lb per week: 54 lb (24 kg)
• Spring and fall, 16 weeks at 2 lb per week: 32 lb (15 kg)
• Summer, 18 weeks at 1 lb per week: 18 lb (8 kg)
• Seed total: 104 lb (47 kg) at $1.30 = about $135
• Suet: roughly 26 cakes across the cold half of the year at $2.25 = about $59
• Annual total: about $194

Call it $150 to $250 depending on traffic and prices, or roughly $15 to $20 a month averaged across the year, weighted heavily toward January and February. That is three 40 lb (18 kg) bags of sunflower and a box of suet cakes.

Worked example: a four-feeder station#

A sunflower tube, a hopper of no-filler mix, a nyjer feeder, a suet cage and a ground tray of millet and cracked corn. This is a full feeding station in a yard with good habitat, and it is where costs get serious.

• Black oil sunflower: 130 lb (59 kg) at $1.30 = $169
• No-filler mix: 120 lb (54 kg) at $2.00 = $240
• Millet and cracked corn on the ground tray: 90 lb (41 kg) at $1.00 = $90
• Nyjer: 30 lb (14 kg) at $3.20 = $96
• Suet: 60 cakes at $2.25 = $135
• Annual total: 370 lb (168 kg) of seed plus suet, about $730

The realistic band is $600 to $900 a year. Two things stand out in that arithmetic. The mix costs more than the sunflower despite a smaller volume, and nyjer costs three times as much per pound as sunflower while feeding the fewest species. Neither is wrong, but both are choices worth making deliberately.

Hull-free seed: does it actually pay?#

This is the arithmetic people ask about most. Black oil sunflower is commonly around 40 percent hull by weight, so a pound of whole seed contains roughly 0.6 lb (0.27 kg) of kernel. At $1.30 per pound of whole seed, you are paying about $2.17 per pound of actual food.

Sunflower hearts at $2.60 per pound are all kernel, so the true food cost is close. Hearts are usually a little more expensive per calorie, not dramatically so, and the real case for them is elsewhere: no hull layer under the feeder, no seed mess to rake, no dead patch on the lawn, and less to attract rodents. In an apartment, on a balcony or over a patio, that is worth paying for.

The catch is spoilage. Hulls are packaging, and sunflower hearts without them absorb moisture and go rancid or moldy far faster in a feeder. Buy hearts in smaller quantities, fill less, and turn them over quickly. The same logic applies to the no-mess blends, which are the most expensive seed per pound on most shelves and the cheapest per pound eaten in a yard where waste is the problem.

The levers that cut cost most#

In rough order of how much money they save, for a typical yard.

1. Stop buying filler. Milo, wheat, oats and red millet are kicked out by most feeder birds. Read the ingredient list before the price, using choosing bird seed and the honest comparison in seed mixes.
2. Baffle the pole. An unbaffled feeder can lose a large share of its contents to squirrels, and the fix is a one-time purchase. See stopping squirrels.
3. Buy in 40 lb (18 kg) bags. The per-pound saving over small bags is often close to half.
4. Add a tray under hanging feeders. It catches what would otherwise fall, and birds clear it.
5. Match seed to your actual visitors. If nothing eats your nyjer, you are storing an expensive seed until it goes rancid.
6. Feed less in summer. Consumption falls naturally, and cutting fill volumes reduces spoilage at the same time.
7. Use one straight seed rather than three specialty ones. Black oil sunflower alone covers most of the species most yards get.

Buying in bulk without wasting it#

Bulk buying is the largest single price lever and the easiest way to lose money if you get it wrong. Seed does not keep indefinitely, and a bag that molds is a total loss plus a health risk to the birds that eat it.

• In cool dry conditions, plan to use a bag within about three months. In summer heat and humidity, treat six to eight weeks as the limit.
• Decant into a sealed metal or heavy plastic container with a lid rodents cannot chew. Paper sacks in a garage are a mouse invitation.
• Store off a concrete floor, which wicks moisture upward, and out of direct sun.
• Buy hearts, hull-free blends and mealworms in smaller quantities than whole seed, because they spoil faster.
• Never top a container up over old seed. Empty, wipe and refill.

The full method is in storing bird seed, and the warning signs are in moldy seed. Buying 80 lb (36 kg) in August to save 30 cents a pound is a bad trade if 20 lb (9 kg) of it clumps.

A budget you can plan around#

For a single feeder and a suet cage, budget $150 to $250 a year. For a two or three feeder setup, $300 to $500. For a full station with a ground tray, $600 to $900, more if you add mealworms or run nectar feeders all summer.

Set that against the one-time costs. A decent beginner setup with a pole, a baffle and two feeders is a comparable outlay in year one and then nothing for years afterward, which is why buying well once is usually cheaper than buying cheaply twice. The tradeoffs are laid out in budget versus premium feeders.