Chicken nesting box size guide

A nest box has to be big enough that a hen can turn around in it and small enough that it feels enclosed. Too large and she does not feel safe; too small and she cannot settle. The conventional answer for standard-breed hens is a 12-inch cube, and it is conventional because it works.

Size by breed

How many

Mounting height — and why it matters more than size

Hens sleep in the highest place available. If the nest boxes sit above the roost, they will roost in the boxes, which means the boxes are fouled every night and the eggs are laid in soiled bedding. This is the single most common nest box mistake and it is entirely a mounting problem.

1. Mount boxes 18-24 inches above the floor, matching the roost height guidance.
2. Always lower than the roost. If your roost is at 24 inches, the boxes go at 18.
3. Add a landing perch or ledge across the front, a few inches out, so hens have somewhere to arrive.
4. Make the perch narrow or hinged so it is not comfortable to sleep on — a wide ledge in front of a box becomes a roost.

The details that decide whether hens use a box

Darkness

Hens look for a dark, private place to lay. A box in a sunny corner with an open front will be ignored in favor of a dark spot behind the feed bin. Siting in the darkest part of the coop does more for box uptake than any other single change, and a strip of curtain across the front works well for a box that cannot be moved.

A lip at the front

A two to three-inch lip across the bottom of the opening keeps nest material and eggs in. Without one, a hen shuffling out takes half the bedding with her and the eggs end up on the floor.

A sloped roof

If the box has a flat top inside the coop, hens will stand on it. A roof sloped at about 45 degrees means they cannot, which keeps the top clean and stops droppings landing on the box fronts.

Privacy between boxes

Full dividers between compartments, not partial ones. A hen in a half-divided box can see her neighbor, which defeats the point.

Boxes that get the dimensions right

Two boxes with published compartment counts, and the 13-inch pad most boxes are built around.

#1 · Two boxes and a collection tray for eight hens

$45.99·on Amazon

$52.99 13% off

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2-Compartment Nesting Box with Egg Collection

Generic

7.6/10★★★★☆Assessed on specs and owner reports

A two-compartment box designed for egg collection — the eggs roll or sit where you can reach them without disturbing a sitting hen. Covers eight hens on the one-per-four rule.

Published specifications

Compartments	2
Covers	Up to 8 hens at 1 box per 4
Feature	Designed for egg collection
Material	Not published by manufacturer

Specifications per Manufacturer figures as published on the Amazon product listing, as published at the date above.

What it does well

• Collection design means fewer eggs cracked by hens shuffling in the box
• Two compartments covers the commonest backyard flock size
• Compact enough for a small coop wall

Where it falls short

• Material and mounting are not published
• Collection trays need emptying daily or eggs pile up and crack anyway
• Two boxes will still have a queue — hens are like that

Our rubric

Egg cleanliness

8.0

Mounting options

7.0

Cleaning access

7.0

Build

7.0

Value

9.0

#2 · Boxes mounted on the outside of a coop

$69.06·on Amazon

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PETSFIT 4-Hole Nesting Box with PVC Waterproof Roof

PETSFIT

8.2/10★★★★☆Assessed on specs and owner reports

Four holes with a PVC waterproof roof and privacy covers. The roof is what makes it an external box: you can hang it on the coop's outside wall and collect without going in.

Published specifications

Holes	4
Roof	PVC waterproof
Privacy	Privacy cover fitted
Mounting	External wall mount

Specifications per Manufacturer figures as published on the Amazon product listing, as published at the date above.

What it does well

• Waterproof roof means it can hang outside the coop and free up interior floor space
• Privacy covers encourage hens to use the boxes rather than a corner of the floor
• Collecting from outside means not disturbing the whole flock for two eggs

Where it falls short

• External boxes are a predator access point unless the lid latches properly
• Cutting a pop-hole through a coop wall is a real job
• Material of the body is not published

Our rubric

Egg cleanliness

8.0

Mounting options

9.0

Cleaning access

8.0

Build

8.0

Value

8.0

#3 · The standard nest pad

$24.99·on Amazon

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Precision Pet Chicken Nesting Pads, 13x13in, 10-Pack

Precision Pet by Petmate

8.3/10★★★★☆Assessed on specs and owner reports

Ten 13 x 13 inch excelsior nest pads. Published dimensions matter here — 13 x 13 is the size most nest boxes are built around, so these drop straight in.

Published specifications

Dimensions	13 x 13 in
Pack	10 pads
Material	Excelsior (wood wool)
Finish	Beige

Specifications per Manufacturer figures as published on the Amazon product listing, as published at the date above.

What it does well

• 13 x 13 in is the de facto standard nest box size, so these fit without trimming
• Excelsior springs back under a hen instead of compacting flat like shavings
• Ten pads is a year of changes for three boxes
• Composts with the rest of the litter

Where it falls short

• More expensive per nest than a handful of shavings
• Excelsior still needs changing when it gets soiled; it is not permanent
• Loose strands can tangle around a chick's leg — use shavings in a brooder instead

Our rubric

Fit for purpose

9.0

Mess and waste

8.0

Quality

8.0

Value

8.0

External or internal?

An external box is a hole in your coop wall with a lid on it. That is fine — many good coops are built that way — as long as the lid latches like a door rather than resting shut. A hook-and-eye on an external nest box lid is an invitation to a raccoon. Latches and predator hardware.