Chicken Nesting Boxes: Size, Number & Setup Guide

Nesting boxes are the cheapest part of a coop to get right and one of the most annoying to get wrong. Too few and eggs get laid on the floor. Too high and the flock sleeps in them. Wrong bedding and you’re washing eggs every morning. Here’s the setup that works, plus fixes for the three problems that catch nearly every keeper.

How many nesting boxes per chicken?

The standard is one box for every 3–4 hens, with a minimum of two boxes for any flock.

It feels wrong the first time you see it — surely twelve hens need twelve boxes? They don’t. Hens lay at staggered times through the morning, and more importantly they actively prefer to share. It is completely normal to build four boxes, watch the whole flock use one of them, and find two hens crammed into it together. That behaviour is instinctive: in the wild, a nest that already contains eggs is proof the site is safe.

Building extra boxes doesn’t stop the queuing, and it does create more places for hens to sleep and foul. Two to four boxes covers almost every backyard flock. Work out your full coop requirement alongside this with the free Coop & Run Size Calculator.

What size should a nesting box be?

The box should feel snug rather than roomy. A hen wants a space just large enough to turn around in — that tight fit is what makes it feel safe. Oversized boxes invite two hens in at once, which is how eggs get broken.

Add a lip 3–4 inches high across the front. It keeps bedding and eggs inside when the hen scratches around getting comfortable, which she will. If you keep large breeds, size up; if you keep bantams, size down.

Where to put nesting boxes

Four placement rules, in order of importance:

1. Lower than the roosts. Always. Chickens sleep at the highest available point. If the boxes are the highest thing in the coop, the flock will roost in them and you’ll collect filthy eggs every morning. This single rule prevents the most common nesting box problem there is.
2. 18–24 inches off the floor. High enough to feel secure and stay clean, low enough for heavy breeds to reach without jumping down hard.
3. In the darkest, quietest corner. Away from the door, away from the main window. Hens want dim and private.
4. Reachable by you. External access hatches are worth the extra build time — you collect eggs without opening the coop and disturbing the flock.

Best nesting box bedding

Use 2–3 inches of bedding and top it up often. The material matters more than people expect, because it determines how clean your eggs are and whether mites get a foothold.

Whatever you choose, keep it dry. Damp bedding is the fastest route to mouldy nests, dirty eggs, and a mite population. Strip and replace the boxes fully every few weeks rather than endlessly topping up.

Types of nesting box compared

Roll-away boxes deserve a note: the floor slopes gently so a laid egg rolls out of reach into a covered collection tray. They cost more, but they solve egg eating and dirty eggs permanently, which makes them worth it for anyone with a persistent problem or more than about a dozen hens.

A sloped roof on top of the box run is a small detail with a big payoff — it stops birds perching (and pooping) on the boxes at night.

How to stop hens sleeping in the nesting boxes

This is the most common nesting box complaint, and it’s almost always a height problem rather than a behaviour problem.

1. Check your roosts are higher than the boxes. If they aren’t, raise the perches. Nine times out of ten, this alone fixes it.
2. Block the boxes at night for a week or two. Close them at dusk, open them at dawn. That’s usually enough to reset the habit.
3. Physically lift offenders onto the roost after dark for several nights. Tedious, but effective — chickens are docile and easy to move once it’s fully dark.
4. Add roost space. Birds pushed off the perch by flockmates will sleep in a box instead. Allow 8–12 inches of perch per bird.
5. Fit a sloped roof over the boxes so the top isn’t an attractive perch either.

Fix it promptly. Hens that sleep in boxes foul them overnight, and you’ll be collecting dirty eggs every day until the habit breaks.

How to stop egg eating and breakage

Egg eating usually starts by accident — an egg breaks, a hen tastes it, and the behaviour spreads through the flock fast. Prevention is far easier than a cure:

• Collect eggs at least once daily, twice in hot weather or if you already have a problem.
• Deepen the bedding. Most breakage is eggs landing on a hard, thinly bedded floor.
• Check calcium. Thin shells break easily, and hens short on calcium are more likely to eat eggs. Offer crushed oyster shell free-choice alongside a complete layer feed — see what chickens eat.
• Darken the boxes. Nest box curtains — a strip of fabric over the entrance — make the box dimmer and more private, which reduces both egg eating and general nest squabbling.
• Reduce crowding. Stressed, cramped flocks develop more vices generally; check your figures against how much space chickens need.
• Fit roll-away boxes if the habit is already established. Removing access to the egg is the only reliable cure once several birds are doing it.

When hens won’t use the boxes

Floor eggs, hedge eggs, and eggs in the feed bin all mean the boxes aren’t meeting one of the hen’s requirements. Run through this list:

• Too bright or too exposed. Move to a darker corner or add curtains.
• Too high or too low. Aim for 18–24 inches, and check heavy breeds can get in comfortably.
• Not enough bedding. A bare box floor reads as an unsuitable nest.
• New to laying. Pullets often need a week or two to work it out — see when chickens start laying eggs.
• No decoy. Place a golf ball, a ceramic egg, or a wooden egg in each box. This is the oldest trick in poultry keeping and it works remarkably well — it signals “safe nest site” to a hen deciding where to lay.
• Mites. A hen that suddenly abandons a box she previously used is often telling you there are mites in it. Inspect the seams and corners after dark, when mites are active.
• A broody hen occupying it. One committed broody can block a box for weeks — see broody chicken breeds for how to break the cycle.

Frequently asked questions

How many nesting boxes do I need for 6 chickens?
Two boxes. The standard is one box per 3–4 hens, and hens share boxes readily — extra boxes rarely get used.

How many nesting boxes per chicken?
One box per 3 to 4 hens, with a minimum of two boxes for any flock regardless of size.

What size should a chicken nesting box be?
About 12 x 12 x 12 inches for standard breeds, 10 inches cubed for bantams, and 14 inches cubed for large breeds such as Brahmas and Orpingtons.

How high should nesting boxes be off the ground?
18–24 inches, and always lower than the roosting bars. If boxes sit higher than the perches, hens will sleep in them and soil the eggs.

What is the best bedding for nesting boxes?
Pine shavings or straw, 2–3 inches deep. Avoid cedar shavings, whose aromatic oils can irritate poultry airways, and hay, which moulds readily.

Why won’t my chickens use the nesting boxes?
Common causes are boxes that are too bright, too high, or too thinly bedded. Placing a fake egg or golf ball in each box usually encourages use within days.

How do I stop chickens sleeping in the nesting boxes?
Make sure the roosts are higher than the boxes, block the boxes at night for a week or two, and move offending birds onto the perch after dark until the habit breaks.

Do nesting boxes need a door?
Not a door, but an external access hatch is very useful — it lets you collect eggs without opening the coop and disturbing the flock.

Next steps: build them into your coop with the chicken coop plans guide, size the whole setup with the Coop & Run Size Calculator, or find out when your pullets will start laying.

If hens are avoiding the boxes entirely, they may have found somewhere better. Hidden nests are one of the causes covered in why chickens stop laying eggs.

Clean boxes mean clean eggs, which keep far longer unwashed. See how to store fresh eggs for why the bloom matters.