When Do Chickens Start Laying Eggs?

For anyone keeping chickens as part of a food self-sufficiency plan, the wait between chick day and first egg is one of the most critical — and sometimes frustrating — periods in flock management. Understanding when to expect that first egg, what delays it, and how to identify the signs that laying is imminent will save you weeks of unnecessary worry.

The short answer: most pullets (young hens that haven’t yet laid) produce their first egg between 16 and 24 weeks of age. That window is real, not imprecise — the variation is driven by breed genetics, day length, diet, and whether your birds have experienced stress. Each factor is within your control to some degree.

For a prepper building a laying flock, getting this right matters. A flock that starts laying on schedule is producing protein within 4-6 months of hatching. A flock delayed by poor conditions might not come online for 7-8 months — a meaningful gap if you’re planning food production timelines.

Egg Laying Age by Breed: The Real Numbers

Breed is the single biggest variable in first-lay timing. Production breeds are genetically optimized to begin laying earlier; large, slow-maturing breeds take longer to reach sexual maturity regardless of conditions.

Breed Comparison: First Egg Age

Breed	First Egg (weeks)	Annual Eggs	Egg Size	Notes
White Leghorn	16–18	280–320	Large/XL	Earliest layer; production breed
ISA Brown / Golden Comet	16–18	300–340	Large	Hybrid layer; very early, very productive
Black Australorp	18–20	250–300	Large	Strong dual-purpose choice
Rhode Island Red	18–22	250–300	Large	Benchmark backyard breed
Plymouth Rock (Barred)	18–22	230–280	Large	Cold-hardy; slightly later than RIR
Easter Egger	20–24	200–280	Medium–Large	Blue/green eggs; variable timing
Buff Orpington	20–24	200–250	Large	Broody setter; slower to mature
Delaware	20–22	200–250	Large	Efficient dual-purpose breed
Jersey Giant	24–30	150–200	Extra-Large	Largest breed; slowest to first lay

Key takeaway: If your food production timeline is tight, production breeds or hybrid layers give you eggs fastest. If you want a dual-purpose flock that also provides meat, Rhode Island Reds and Australorps hit a strong balance between early laying and carcass quality. Jersey Giants should be planned around their longer timeline — expect closer to 6-7 months before eggs arrive.

Signs a Hen Is About to Lay Her First Egg

Watching your pullets closely in the weeks approaching 18-20 weeks old will tip you off well before the first egg appears. These physical and behavioral changes are reliable and consistent across breeds.

1. Comb and Wattle Color Change

This is the most reliable visual indicator. A pullet approaching sexual maturity undergoes a hormonal shift that drives blood flow to the comb and wattles. What was pale pink or coral at 10-12 weeks turns progressively brighter red over the 2-3 weeks before first lay. By the time she’s about to lay, her comb should be full-sized, deep red, and slightly floppy.

What to watch: Compare your pullets side by side. The birds with the deepest red combs are typically the ones laying first. Pale combs at 22 weeks signal a bird that isn’t quite there yet — or one experiencing a delay.

2. The Squat Response

When a hen is hormonally ready to lay, she develops a reflexive squatting behavior triggered by the approach of a rooster — or a human hand. As you walk among your flock or reach toward a bird, a sexually mature hen will squat down, spread her wings slightly, and hold still. She’s responding as if to accept mounting.

This is one of the most consistent pre-lay signals. Once you see a pullet squat consistently, her first egg is typically within a week, often within days.

3. Nest Box Investigation

Pullets approaching first lay begin exploring nest boxes with unusual interest. They’ll climb in, scratch around, sit briefly, and exit. Some will do this repeatedly throughout the day in the week before first lay. A pullet spending extended time in a box is often figuring out what her instincts are telling her to do.

Make sure boxes are set up and accessible before your pullets hit 16 weeks — a hen who can’t find an appropriate box may lay on the floor or in a corner, which creates egg-eating habits and makes collection difficult.

4. Physical Widening of the Pelvic Bones

An experienced keeper can check pelvic bone spread to estimate laying readiness. On a non-laying pullet, the two pelvic (pubic) bones are close together — you can barely fit a finger between them. On a hen in active lay, those bones spread to accommodate egg passage — two fingers or more can fit between them. This technique requires handling your birds regularly, but it’s a reliable indicator and worth learning.

What Delays Laying — and How to Fix It

A pullet past 24 weeks that still hasn’t laid is giving you a signal that something in her environment is wrong. The causes are almost always fixable.

Insufficient Light

Light is the master regulator of egg production. The photoreceptors in a hen’s brain (literally in the brain — not just the eyes) detect day length and trigger or suppress the hormones that drive the reproductive cycle. Hens require at least 14 hours of light per day to initiate and maintain laying.

This is why pullets raised in summer often start laying right on schedule, while pullets hatched in late spring and approaching laying age in September or October sometimes stall. Natural day length in most of the US drops below 14 hours by late September and doesn’t return above that threshold until March.

The fix: Install a simple LED bulb on a timer in the coop. Set it to extend “morning” light so the total light window (natural + supplemental) reaches 14-16 hours. A 9-watt LED is sufficient for most coops. Position it high enough to illuminate the entire coop — 7 feet or higher. The light doesn’t need to be bright — 1 foot-candle at bird level (roughly enough to read a newspaper) is the threshold.

For preppers in northern latitudes building a year-round egg supply, supplemental lighting in winter is not optional — it’s a basic infrastructure requirement.

Wrong Feed

A pullet needs to switch to layer feed at 16-18 weeks — or when you first see laying signs, whichever comes first. Layer feed is formulated for higher calcium content (3.5-4%) to support eggshell formation. A pullet still on grower feed at 20 weeks is likely calcium-deficient, which delays and disrupts laying.

Also offer free-choice crushed oyster shell in a separate dish. Layer feed alone sometimes falls short, especially for high-production breeds during peak lay.

What not to do: Don’t switch to layer feed before 16 weeks. High calcium in young pullets can cause kidney damage.

Stress and Environmental Disruption

Chickens are more stress-sensitive than their reputation suggests. Moving to a new coop, adding new flock members, a predator attack (even if no birds were lost), a sudden change in temperature, or extended handling can suppress or delay the onset of laying by weeks.

If you just added pullets to an existing flock, expect a 2-3 week delay as the pecking order establishes and the new birds acclimate. If a predator visited the run at night, expect a production disruption even if every bird survived. These are temporary, but you need to account for them in your timeline.

Heat Stress

Temperatures consistently above 85°F suppress laying. At 95°F and above, laying can stop entirely and birds face heat stroke risk. Shade, ventilation, and cool water are essential in hot climates during summer.

Counterintuitively, pullets raised in hot summer conditions may be close to laying age in August but experiencing enough heat stress to delay first lay until temperatures moderate in September or October — right as the light hours are also dropping. This double-delay effect is common in the South and Southwest.

First Eggs: What to Expect

The first eggs from a new pullet are almost always smaller than what she’ll produce at full maturity. Double-yolkers are common in the first 2-4 weeks as her laying system calibrates. Soft-shelled or shell-less eggs are also normal early on — the shell gland takes time to regulate correctly. These early oddities are not a health problem; they resolve on their own.

Expect eggs every day or every other day at first. Full production (5-6 eggs per week for a productive breed) typically takes 2-4 weeks to establish after first lay.

Why Laying Age Matters for Food Self-Sufficiency

For preppers building a food production system, first-lay timing is a planning variable, not just a curiosity.

A flock of 8 Rhode Island Red pullets hatched on April 1 should produce their first eggs in late August, hit full production in September, and be laying steadily through fall. If you add supplemental light before day length drops below 14 hours, they carry that production through winter. That’s a functional, year-round protein source within one season.

The same flock, hatched in late May under suboptimal conditions, might not lay until November — right as natural light falls off — and without supplemental lighting, you’re waiting until March for reliable production. That’s a 6-month difference in food output from a timing and management choice you made in the spring.

Plan your hatch dates with first-lay timing in mind. Target hatches in late February through April so your pullets reach laying age during long days. Keep supplemental lighting on a timer from October through March. Get them on layer feed at week 16. These three steps compress the time between chick day and first egg and give you the most reliable production window.

For broader context on integrating eggs into a food self-sufficiency plan, see our guide to raising chickens for food self-sufficiency, and our resources on emergency food storage and long-term food storage planning.

The PrepperIQ Take

A pullet’s first egg is a milestone, not a mystery. The biology is predictable, the timeline is manageable, and the variables that delay it are almost entirely within your control. Know your breed’s target age, watch for the comb, squat, and nest box signs in the weeks before, get the lighting and feed right, and you’ll have eggs on schedule.

In food self-sufficiency terms, a flock that starts laying on time and produces consistently through winter is worth more than one that’s bigger but unreliable. Get the fundamentals right before you expand.

Frequently Asked Questions

At what age do chickens start laying eggs?

Most pullets lay their first egg between 16 and 24 weeks of age. Production breeds like the Leghorn can start as early as 16-18 weeks; large dual-purpose breeds like the Jersey Giant may not lay until 24-30 weeks. The average for common backyard breeds (Rhode Island Red, Plymouth Rock, Australorp) falls around 18-22 weeks.

How can I tell if my hen is about to lay her first egg?

Watch for three signs: reddening and enlargement of the comb and wattles (pale pink turns bright red over 1-2 weeks), a squatting response when you approach or reach toward her, and increased time spent inspecting or sitting in nest boxes. These signs together typically indicate first lay is within days to a week.

Does light affect when chickens start laying?

Yes — light is the primary trigger for egg production. Hens require at least 14 hours of light per day to maintain laying. Pullets raised in late summer and early fall may be nearing laying age just as day length drops below that threshold, delaying first lay until spring. Supplemental lighting (a simple LED timer) in the coop maintains consistent day length year-round.

Why are my 6-month-old chickens not laying yet?

The most common causes of delayed laying past 24 weeks are: insufficient light (fewer than 14 hours per day), nutritional deficiency (not on layer feed, or calcium too low), stress from a move, predator pressure, or flock change, and heat above 85°F (29°C). Rule these out in order. Most pullets begin laying once conditions normalize.

Does the color of a chicken affect when it starts laying?

Egg color does not affect laying age — that is determined entirely by breed, not shell color. A Leghorn (white eggs) and an Easter Egger (blue or green eggs) may both start at 18-20 weeks, while a Jersey Giant (brown eggs) starts at 24-30 weeks. The laying age is tied to the genetics of the breed, not the pigment in the shell.