Quick Answer: The best nest box for Red-Bellied Woodpeckers in 2026 is the Duncraft Three Woodpecker House (Eastern white pine, about $54.95) — a 2.25-inch entrance hole built to the shared spec for Hairy, Red-headed, and Red-bellied Woodpeckers. The Coveside Conservation version (around $89.95) ships ready-to-mount with wood chips and a slate predator guard included, and Duncraft’s recycled-plastic Three Woodpecker House (roughly $129.95) is the rot-proof upgrade. The catch worth knowing before you buy: there’s no genuine single-species “Red-Bellied Woodpecker box” on the market — every real option is a shared three-species design, because the three birds need almost identical cavity dimensions.
Red-Bellied Woodpeckers will use a nest box, but less predictably than a Downy Woodpecker or a Northern Flicker, and the boxes sold for them look nothing like the dedicated single-species houses covered elsewhere on this site. Here’s why that’s genuinely the case, and which of the shared boxes is worth buying.
Red-bellied woodpecker nest boxes by the numbers
- A 2-2.25-inch entrance hole is the shared spec that makes one box fit three species: Hairy, Red-headed, and Red-bellied Woodpeckers. That’s one size up from a Downy’s 1.25-inch hole and one size down from a Northern Flicker’s 2.5-inch hole — the Red-bellied sits in the gap between those two, which is exactly why no manufacturer builds a hole size just for it.
- Zero dedicated single-species boxes found across Duncraft, Coveside, and Woodlink’s current catalogs — every listing that fits a Red-bellied is explicitly marketed as a “Three Woodpecker House” or similar multi-species design, unlike the Downy and Flicker boxes on this site, which are each sold under their own name.
- A 6x6-inch floor and roughly 12-15 inches of interior depth, per nest box reference specs compiled from Cornell Lab data — deeper than a Downy’s 9-inch box, shallower than a Flicker’s 16-18-inch requirement.
- A pair can excavate a natural cavity in as little as 7 to 10 days, which is a big reason Red-bellied Woodpeckers pass over nest boxes more often than Downy Woodpeckers or Flickers do when dead wood is available nearby.
- Mounting height runs about 10-20 feet, matched to the same shared-spec box used for all three species at this hole size.
Our top picks at a glance
| Box | Best for | Material | Entrance hole | Price |
|---|---|---|---|---|
| Duncraft Three Woodpecker House (wood) | Best overall | Eastern white pine | 2.25" round | ~$54.95 |
| Coveside Conservation Three Woodpecker House | Best ready-to-mount | Eastern white pine | 2" round | ~$89.95 |
| Duncraft Three Woodpecker House (recycled plastic) | Best rot-proof | Recycled plastic | 2.25" round | ~$129.95 |
1. Duncraft Three Woodpecker House (Wood) — Best Overall
Duncraft Three Woodpecker House (Eastern White Pine)
- Solid Eastern white pine construction, about 17.5"L x 7.25"W x 10"H, with a 2.25-inch entrance hole that fits Red-bellied, Red-headed, and Hairy Woodpeckers equally.
- The lowest-priced real option in this shared-spec category, and the most widely stocked of the three picks here.
- Front-panel access for the annual cleanout all three species' excavated cavities need.
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Duncraft’s wood version is the one to start with if you’re not sure a Red-bellied will even find the box — it’s inexpensive enough that the 7-10-day head start a natural cavity has over a box isn’t a costly bet to make. The 2.25-inch hole is correctly sized for all three species it’s marketed to, not just the Red-bellied, which matters since this is one box doing a job that other species on this site need two or three separate dedicated products for.
2. Coveside Conservation Three Woodpecker House — Best Ready-to-Mount
Coveside Conservation Three Woodpecker House
- Handcrafted Eastern white pine with a slate predator guard around the entrance — the same squirrel-deterrent detail Coveside uses on its Flicker and Downy houses elsewhere on this site.
- Ships with wood chips already included, so there's no separate shavings purchase before mounting.
- 2-inch entrance hole, at the narrower end of the shared Hairy/Red-headed/Red-bellied spec.
The included wood chips are the real differentiator here — since all three woodpecker species this box targets excavate rather than build a nest, arriving pre-packed with chips saves a step most first-time buyers forget until the box is already on the tree. The slate guard is a nice carryover from Coveside’s larger Flicker house, scaled to this box’s smaller footprint.
3. Duncraft Three Woodpecker House (Recycled Plastic) — Best Rot-Proof
Duncraft Three Woodpecker House (Recycled Plastic)
- About 7.25"W x 6.5"D x 18.5"H, with a 2.25-inch entrance hole and a built-in predator guard around the opening.
- A built-in wire-grid ladder helps fledglings climb to the hole and out, plus an open front panel for cleanout.
- Recycled-plastic construction means no repainting or sealant over the years the wood versions eventually need.
This is the pick for anyone who’s mounted a wood box before and gotten tired of the eventual repainting or rot. The wire-grid ladder is a feature the two wood boxes above don’t mention, and it’s a genuinely useful detail for fledglings in a deeper 18.5-inch box leaving the cavity for the first time.
How to choose a red-bellied woodpecker nest box
- Don’t search for a “Red-bellied only” box — it doesn’t exist as a real product. Every genuine option is sold as a shared Hairy/Red-headed/Red-bellied house. If a listing claims to be exclusively for Red-bellied Woodpeckers, check the stated hole size against the roughly 2-2.25-inch shared spec before buying.
- Confirm the hole is 2 inches or larger. A hole sized for a Downy (1.25 inches) or even a Hairy alone on the small end (as low as 1.5 inches in some references) can shut a Red-bellied out entirely.
- Pack it with wood chips. Red-bellied Woodpeckers excavate rather than nest-build, same as every other woodpecker on this site — an empty box is harder for them to use than one with 2-3 inches of loose shavings already inside.
- Mount 10-20 feet up on a tree trunk or pole, and don’t be discouraged if it sits empty the first season — natural cavity excavation takes a pair as little as 7-10 days, so a box frequently loses out to a nearby dead tree.
- Lower your expectations relative to Downy or Flicker boxes. This species simply takes to man-made cavities less reliably than those two, regardless of which box you buy.
Red-bellied Woodpeckers are one of the species our how to attract woodpeckers guide covers for suet and dead-snag habitat, which matters more for this species than for Downy or Flicker since a box is a lower-odds bet here. If a Red-bellied visits your suet cage already, our best suet for woodpeckers roundup covers the blends that keep them coming back. For the two woodpecker species that take to a box far more reliably, see our best downy woodpecker nest box and best flicker nest box guides — both much deeper sub-categories than this shared-spec one.
The bottom line
The Duncraft Three Woodpecker House in Eastern white pine is the best Red-Bellied Woodpecker nest box for most people — correctly sized at a 2.25-inch hole and the least expensive of the three real options. The Coveside Conservation version is worth the upgrade if you want wood chips and a slate predator guard already included, and Duncraft’s recycled-plastic version is the one to buy if you don’t want to repaint a wood box down the road. Whichever you pick, go in knowing this is a shared three-species box, not a dedicated single-species house — and that a Red-bellied pair may still choose a nearby dead tree over any box at all.