Bird Feeder Can Setup: DIY Fixes and Safe Selection Guide

A bird feeder can be built from a simple tin or aluminum can in about 20 minutes, and it works surprisingly well for small seed-eating birds like chickadees, house finches, and sparrows. You drill or punch a few feeding holes, add a perch stick, hang it from a branch, and fill it with black-oil sunflower seed. That said, the phrase 'bird feeder can' means two different things depending on who's searching: either a DIY feeder you make from a household can, or a commercially made feeder with a cylindrical can-like shape. Both are worth understanding because they suit different birds, foods, and situations.

DIY Can Feeder vs. Can-Style Commercial Feeder: What You're Actually Dealing With

The DIY version is exactly what it sounds like: a clean tin can (coffee can, soup can, large food can) or a plastic container converted into a feeder by cutting or drilling openings, adding a hanging wire, and often gluing on a perch. It's a budget-friendly starting point, a craft project, or an emergency solution when your regular feeder breaks mid-winter.

The commercial 'can-style' feeder is a different animal. These are purpose-built tube or cylinder feeders made from metal or UV-stabilized plastic, designed to hold seed, suet, or mixed blends. They share the same cylindrical silhouette as a can, but they come with engineered ports, drainage, and UV and weather resistance that a repurposed soup can simply can't match. If you've been shopping and landed here looking at tube feeders, those fall into this category too. The comparison table later in this article breaks down when each approach makes sense.

Best Can Feeder Designs for Different Foods and Feeding Styles

Not every can design works for every food. Matching the opening size and design to your target food and birds is the single biggest factor in whether birds actually use it.

Suet is a special case. Dedicated suet bird feeder designs can help you offer suet safely and attract the right visitors. The best suet bird feeders are designed specifically to hold suet securely and let woodpeckers and nuthatches feed comfortably. A standard can doesn't handle a suet cake well unless you swap the side wall for a wire mesh insert, which lets birds cling and peck rather than reaching in through a small hole. If woodpeckers or nuthatches are your priority, a dedicated suet feeder beats a can design every time. But for the seed-eating crowd, a well-built tin can feeder punches above its weight.

How to Build a DIY Tin Can Bird Feeder Step by Step

What You'll Need

• One large clean tin can (28 oz or larger coffee or food can works best; larger cans hold more seed and are easier to drill)
• A drill with a 1/2-inch bit for seed ports, plus a 1/8-inch bit for drainage holes
• Metal file or sandpaper (80-grit works well) to deburr all cut edges
• Two natural hardwood dowels or straight sticks, about 6-8 inches long and 1/4-inch diameter, for perches
• Waterproof epoxy or exterior wood glue
• 16-gauge galvanized wire or a heavy S-hook for hanging
• Rustproof spray paint or clear lacquer (optional but highly recommended for longevity)
• Needle-nose pliers

Building It

1. Wash the can thoroughly and remove the label. Let it dry completely before drilling.
2. Mark two to four feeding ports on the side of the can, about 1 inch up from the bottom. Space them evenly around the circumference. Each port should be 1/2 inch in diameter for black-oil sunflower seed, or up to 3/4 inch for mixed seed.
3. Drill the ports slowly. Use a center punch or nail to dimple the metal first so the drill bit doesn't wander. Drill from the outside in.
4. File every cut edge thoroughly until smooth. Run your finger around each hole before proceeding. Sharp metal edges will injure birds' feet and beaks, so don't skip this step.
5. Drill 4 to 6 small drainage holes (1/8 inch) across the very bottom of the can. These are non-negotiable for keeping seed dry.
6. Mark perch holes about 3/4 inch below each feeding port, just large enough for your dowel or stick to fit snugly. Push the perch through both sides of the can so it extends about 2 inches on each side. Secure with waterproof epoxy.
7. Punch or drill a hanging hole through the top rim (or use the existing lid ring if your can has one). Thread the galvanized wire through and twist it into a secure loop with pliers. The feeder should hang level, not tilted.
8. Apply rustproof spray paint or clear lacquer to the outside of the can and let it cure fully before adding seed. This step dramatically extends feeder life.
9. Fill the can two-thirds full with seed and hang it. Don't overfill: seed sitting against a vent hole will block drainage and get wet.

One thing the PA Game Commission's tin can feeder instructions get right: a perch below each hole matters more than most people expect. Chickadees and finches grab-and-go, but sparrows and nuthatches prefer a stable landing spot before they commit to eating. Two cross-perches at different heights on a larger can will attract a noticeably broader range of visitors.

Placement and Setup for Quick Bird Visits

Height matters, but not in the way most beginners think. The standard recommendation is 5 to 6 feet off the ground, which puts the feeder out of easy reach for cats and keeps squirrels from launching at it from the ground. Hang it from a branch or dedicated pole that's at least 10 feet away from any jump-off point (fence, tree trunk, roofline), since squirrels can cover 6 feet horizontally with a running leap.

Window proximity is worth thinking about carefully. The counterintuitive guidance from Cornell's Project FeederWatch is that placing a feeder very close to a window (within 3 feet) actually reduces window strike risk, because birds don't build up dangerous flight speed in that short distance. Placing it 10 to 30 feet away is the danger zone. For a DIY can feeder hanging from a porch, close proximity to a window is usually fine.

Cover nearby but open sightlines. Birds feel safer feeding when there's a shrub or tree within 10 feet to dart to if a hawk shows up, but they don't want the feeder jammed against dense cover where cats can hide. A spot in partial shade also keeps seed cooler and extends its freshness, especially in summer.

Weatherproofing and Winter Feeding

Wet seed is the number-one failure mode for can feeders in every season, but it's especially brutal in winter when soaked seed freezes solid and blocks ports entirely. A few design and placement adjustments make a real difference.

• Drill drainage holes at the absolute lowest point of the can, not partway up the side. Water follows gravity, and any hole above floor level leaves a puddle.
• Angle the feeding ports very slightly downward (a 5-degree tilt during drilling is enough) so any moisture that enters flows back out rather than pooling inside.
• Add a DIY rain guard: a second can lid, a small plastic saucer, or a piece of sheet metal cut into a dome and wired above the hanging hook acts as an umbrella. Even a 4-inch overhang keeps the worst of rain off the ports.
• In freezing weather, check the feeder every morning. Frozen seed clogs ports instantly. Keep your holes slightly larger in winter (3/4 inch rather than 1/2 inch) to reduce clogging.
• Switch to high-fat winter foods. Black-oil sunflower seed, peanut pieces, and suet cakes give wintering birds the calorie density they need. Audubon's winter feeding guidance specifically calls out sunflower and safflower for hopper and tube-style feeders, and the same logic applies to a can feeder.
• Empty and dry the feeder before each refill. Pouring new seed on top of damp old seed accelerates mold growth and can spread disease to your regular visitors.

Metal cans rust faster in winter than in summer because of the freeze-thaw cycle. If you painted and sealed the exterior before deployment, you'll get a much longer life. Check for rust spots every few weeks and touch up with rustproof paint. A compromised can with rust inside should be retired: rust flakes in seed are a real contamination risk.

Pest and Safety Troubleshooting

Squirrels

A tin can feeder hung from a branch with no baffle is essentially an invitation for squirrels. They'll reach it within days, chew the feeding ports wider, and dump or empty the seed fast. The most effective solution is a pole-mounted setup with a torpedo or dome baffle positioned at least 4 feet off the ground and at least 18 inches below the feeder. Squirrels can jump 6 feet straight up from the ground, so any baffle needs to account for that. A cage surrounding the feeder (hardware cloth with 1.5-inch openings) is a reasonable secondary defense that lets small birds through while blocking squirrels.

Rodents and Rats

Ground-feeding seed spillage is the main rodent attractant. Sweep or rake beneath the feeder every few days. Using no-mess seed blends (hulled sunflower, shelled peanuts) reduces what falls to the ground. Avoid hanging a can feeder from a wooden structure like a deck rail if rats are a local problem: rats are excellent climbers and will reach an unhung feeder faster than you'd expect.

Ants

Ants mostly go after liquid feeders (hummingbird nectar) but will also raid seed feeders for oils and spilled food. An ant moat, which is a small water-filled cup that clips onto the hanging wire above the feeder, breaks the ant trail effectively. This is a $3 to $5 accessory at any hardware store and is one of the easiest wins in feeder maintenance.

Sharp Edges and Rust

This is the safety issue most DIY guides underemphasize. Any drilled or cut edge on a metal can has the potential to cut a bird's foot or beak, especially as the feeder ages and the metal flexes. File every opening until it's smooth to the touch, and re-inspect monthly. If you see rust forming around any port or hole, file back to bare metal, apply a dab of rustproof paint, and let it dry fully before re-hanging. If the rust is inside the can or near the seed reservoir, retire the feeder.

Disease Prevention

The Minnesota DNR and RSPB both flag wet, moldy seed as a primary disease vector at feeders. For a can feeder, cleaning is harder than with a commercially designed feeder because the opening is narrow. A bottle brush works well for reaching inside. Use a 10% bleach solution (one part bleach to nine parts water), scrub thoroughly, rinse until you can't smell bleach, and let the can air-dry completely before refilling. Do this every two weeks in wet weather, and monthly in dry conditions. If you notice sick or lethargic birds congregating at your feeder, stop feeding for at least three weeks and do a full clean before resuming.

When It's Time to Upgrade to a 'Real' Feeder

A tin can feeder is a great starting point, but it has real limitations. Use this as a decision guide for when to move on. For the latest bird feeders news, it helps to check recent reviews and seasonal feeding tips before you switch designs.

The can feeder is genuinely effective for chickadees, house finches, nuthatches, and sparrows visiting sunflower or mixed seed. If that covers your local bird population and you're happy cleaning and maintaining a simple setup, there's no pressure to upgrade. But if you're chasing specific species like woodpeckers, goldfinches, or cardinals, or dealing with persistent pest pressure, a feeder designed for those specific challenges will give you far better results with a lot less frustration. The best feeder for your situation is always the one matched to the bird, the food, and the local pest pressure, not just the one you can build in an afternoon.

If you do decide to move beyond the can, it's worth comparing the broader feeder types and reading up on what works for your specific target species before buying. If you want to explore bird feeder alternatives, compare tube, tray, and specialty feeders based on your target species and local pests. The range of options is wide, and what works brilliantly for a cardinal setup may be the wrong call entirely for a finch-focused yard.