Brooder Setup: A Week-by-Week Checklist for Chicks

A brooder has one job: to stand in for a hen for the first few weeks of a chick’s life. It must provide warmth the chicks can move toward or away from, enough floor space for fast-growing birds, clean water, food they can find, and a floor they do not slip on. None of that is complicated — but all of it changes week by week, which is where beginners get caught out. The brooder that was perfect on day one is cramped by week four.

This checklist plans the whole six weeks in advance, using the same figures as the FlockCalc brooder planner: chicken chicks start at 0.5 sq ft each and grow to 1 sq ft by weeks 4–6; quail chicks start at 0.25 sq ft and grow to 0.5 sq ft. Heat starts at 95 °F (35 °C) in week 1 and drops about 5 °F a week to 70 °F (21 °C) by week 6.

Set the brooder up and run it before hatch day, not while chicks are peeping in a box beside you. You need:

• A draft-free container with walls about 18 inches high. A big plastic tote, a stock tank, or a cardboard appliance box all work if the size is right. Avoid square corners in small pens — corners are where chicks pile and smother, so round them off with a curve of cardboard.
• A non-slip floor. Put paper towels over the bedding for the first days so chicks find food, not shavings — newly hatched birds peck at whatever is underfoot, and you want their first meals to be feed.
• Heat on one side only. A lamp or heat source covering part of the brooder, never all of it, so chicks can move away to cool down.
• A thermometer at chick height, under the heat source, so you measure the temperature the chicks actually feel.
• Water and feed ready, with the heat already running so the floor is at temperature when the chicks go in.

Timing note: if you hatched these chicks yourself, work out hatch day, candling day, and lockdown day from the date you set the eggs with the Hatch Date Calculator — chickens take 21 days, quail 18, ducks 28 — so the brooder is warm and waiting on the right date.

Space: 0.5 sq ft per chicken chick; 0.25 sq ft per quail chick. Heat: 95 °F (35 °C) at chick height under the lamp.

• Move chicks in once the floor under the heat is at temperature.
• Show each chick the water — a gentle dip of the beak tells it where drinking happens.
• Keep feed where they stumble across it: on the paper towels at first, then in a feeder once they are eating confidently.
• Learn the behaviour check on day one: chicks huddled under the lamp are cold; chicks pressed against the far edges, panting, are too hot; evenly spread chicks that wander, eat, and sleep in loose groups are right.

Space: chicken chicks rise to 0.75 sq ft each; quail chicks to 0.3 sq ft each. Heat: down to 90 °F (32 °C).

• Raise the lamp or reduce the heat to hit the new temperature — do not assume last week’s setting has drifted down on its own.
• Chicken chicks need half as much space again as last week. If your starter box was sized exactly to week 1, this is your first upgrade moment: move them to the bigger pen now rather than when problems appear.
• Too little space shows up fast as a brooder that gets dirty faster than you can clean it. If you are cleaning constantly, check the maths before you blame the bedding.

Space: chicken chicks stay at 0.75 sq ft each; quail chicks rise to 0.4 sq ft each. Heat: down to 85 °F (29 °C).

• Watch for feather-pecking and uneven growth — classic signs that space is tight, as weaker chicks get pushed from feed and heat.
• Keep checking behaviour over the thermometer: the flock’s distribution across the floor overrules the dial every time.

Space: chicken chicks reach 1 sq ft each and stay there; quail chicks reach 0.5 sq ft each, their final figure. Heat: down to 80 °F (27 °C).

• Your chicken brooder is now at its final size for the remaining weeks. If you planned the box from the week 6 row of the table, nothing changes. If you did not, this is the non-negotiable upgrade week.
• Feed use climbs from here as the birds grow. The Chicken Feed Calculator uses about 0.08 lb per chick per day for birds up to 6 weeks, before they step up to the grower rate.

Space: unchanged — 1 sq ft per chicken chick, 0.5 sq ft per quail chick. Heat: down to 75 °F (24 °C).

• Quail chicks feather faster than chickens and are usually ready to leave the brooder at 4–5 weeks, going straight into their adult cage setup. Plan that cage, at 1 sq ft per bird, before you need it.
• Chicken chicks stay put. The test for leaving is full feathering plus night temperatures not far below what they have been weaned to, and most chicken breeds are not there until around week 6.

Space: still 1 sq ft per chicken chick. Heat: down to 70 °F (21 °C), after which the lamp can come off — feathered chicks handle normal room temperature at this point.

• The moving test: fully feathered, around 6 weeks for most chicken breeds, with night temperatures not far below about 70 °F. Pass both parts and they are ready for the coop.
• Know the coop numbers before moving day: pullets graduate into housing planned at 3.5 sq ft of coop floor per standard bird — a house that fits the adults they are about to become.

Ten is a common order size, so here is the full plan for 10 chicken chicks:

• Week 1: 10 × 0.5 sq ft = 5 sq ft at 95 °F. A large tote is fine.
• Week 2: 10 × 0.75 sq ft = 7.5 sq ft at 90 °F.
• Week 3: still 7.5 sq ft at 85 °F.
• Week 4: 10 × 1 sq ft = 10 sq ft at 80 °F — a 2 × 5 ft or 3 × 4 ft floor (12 sq ft, with welcome spare) covers it.
• Weeks 5–6: still 10 sq ft, at 75 °F then 70 °F.

The same logic for 12 quail chicks: week 1 needs 3 sq ft, week 2 needs 3.6 sq ft, week 3 needs 4.8 sq ft, and from week 4 they need 6 sq ft — half the chicken group’s final footprint. Note the shape of both examples: the brooder you need at the end is double the one you need at the start. Building for week 1 and improvising later is the most common brooder mistake of all.

Brooder success is a schedule, not a talent: space rising from 0.5 to 1 sq ft per chicken chick (half that for quail), heat falling from 95 °F to 70 °F in weekly 5 °F steps, behaviour checked daily against both. Build for week 6 from day one, run your chick count through the Brooder Size Calculator, and the six weeks become a checklist instead of a series of surprises.