How Many Eggs Does a Marans Lay Per Year?

Use the egg production calculator to model your specific flock.

Production ranges

Scenario	Annual eggs	Avg / week	Avg / day	When this happens
Low	~150	~2.9	~0.41	Dark-egg show line, older hen, or summer heat
Normal	~180	~3.5	~0.49	Typical or Cuckoo-line hen, Year 1 to 2, natural daylight, layer feed
High	~220	~4.2	~0.60	Production or Cuckoo line, Year 1, 16-hr lighting, 16 to 18% protein

The Normal row is the most realistic starting point for planning. It assumes a healthy first or second year hen on layer feed with natural daylight. Marans are steady, moderate layers rather than high-output hybrids, so plan around three to four eggs a week.

The line matters more than the variety name. Lines bred for the darkest #4-and-above shells often trade away volume and settle near 150 eggs, while Cuckoo and production-selected lines push toward 200 to 220 with slightly lighter shells. Decide whether you want the darkest egg or the fullest basket before you buy.

By year, month, week, and day

Time period	Low (~150/yr)	Normal (~180/yr)	High (~220/yr)
Per year	150	180	220
Per month (average)	~12.5	~15	~18.3
Per week (average)	~2.9	~3.5	~4.2
Per day (average)	~0.41	~0.49	~0.60
Dozens per year	~12.5	~15	~18.3

A hen lays one egg every 24 to 26 hours at full production and skips days, so the daily average never reaches 1.0. Marans take a little longer than most breeds to finish an egg, since the dark pigment is laid down in the final hours of the cycle, which is part of why they top out as moderate rather than heavy layers.

The formula

Scale to any flock size:

Weekly eggs = Number of hens × 4 × Age Factor × Season Factor

The baseline of 4 is a Marans hen’s peak weekly output in her first year. Adjust it down with the factors below as the flock ages and the seasons change.

Factor	Multiplier
Year 1 (peak)	×1.00
Year 2	×0.84
Year 3	×0.66
Year 4	×0.50
Year 5	×0.38
Spring / Summer	×1.00
Fall (Sept to Oct)	×0.90
Winter, no supplemental light	×0.75
Winter, 16-hr light schedule	×0.95

Example: 6 hens × 4 × 0.84 (Year 2) × 0.75 (winter, no light) = 15 eggs per week.

Use the egg production calculator to model your specific flock by age and season.

How production drops year over year

Production slides down gradually rather than stopping at a set age. The table applies the age factors to the Normal annual figure of ~180 eggs.

Year	Per hen / year	Per hen / week	6-bird flock / year	6-bird flock / week
Year 1 (peak)	~180	~3.5	~1,080	~21
Year 2	~151	~2.9	~907	~17
Year 3	~119	~2.3	~713	~14
Year 4	~90	~1.7	~540	~10
Year 5	~68	~1.3	~410	~8

A Marans hen is typically productive for about five years and lays somewhere near 700 eggs across her lifetime. Output slides down gradually rather than stopping at a set age, so if steady numbers matter, add a young pullet or two every other year to keep the flock average high as your older hens slow down.

Month by month (first-year hen)

Marans are cold-hardy birds that lay steadily through winter once they are mature, with the usual dip in the shortest days. Their weaker season is high summer, because they are a large breed and laying slows in heat. Worth knowing for Marans specifically: the eggs are at their darkest in the cool months and fade to a lighter brown through summer.

Month	Natural light only	With 16-hr coop lighting	Notes
January	12	16	Short days, darkest egg color
February	14	16	Color still rich
March	16	17	Days lengthening
April	18	18	Spring peak
May	18	18	Strong laying
June	16	16	Heat begins, color lightening
July	14	14	Hottest months, lightest egg color
August	14	14	Heat dip continues
September	16	16	Cooler, recovery, color deepening
October	16	17	Strong fall laying
November	14	16	Holds through cooling weather
December	12	16	Shortest days, minimum without lighting

If you choose to use supplemental light, start it in early September before the days shorten and aim for 14 to 16 total hours. Lighting evens out the winter laying months, but it will not change the summer heat dip or the way egg color lightens in warm weather, which are managed with shade and water instead.

What changes the number

The single biggest lever on a Marans hen’s annual total is the line she comes from, followed by heat, daylight, age, and diet.

Breeding line: dark eggs or more eggs

Marans were bred for egg color first, and that choice caps their numbers. Under the French standard a hen must reliably lay a grade 4 or darker shell on the nine-point color scale to count as a Marans, and lines selected hard for that deep color often settle near 150 eggs a year. Cuckoo and production-leaning lines, selected more for output, reach 180 to 220 but tend to lay a slightly lighter brown. You are choosing between the darkest egg and the fullest basket.

Egg color and shell pigment

The chocolate color is a surface coating, not the shell itself. A pigment called protoporphyrin IX is brushed onto the shell in the last few hours before laying, which is why it scrapes off with a fingernail and why breeders keep soft bedding in the nest boxes. Color is darkest in the cool months and lightens through summer heat, and stress or a move can lighten it too. Each hen also lays her darkest eggs early in a laying cycle, with the shade fading until she takes a break and resets.

Heat stress

Heat is the Marans hen’s weak point. At 6.5 to 8 pounds she carries enough body mass that laying slows once temperatures climb into the 90s Fahrenheit, and her egg color fades at the same time. Give deep shade, cool water, and airflow through the hottest part of the day. If laying drops sharply and stays down with no heat, molt, or broody cause, consult a licensed poultry veterinarian or your local extension service.

Daylight

Hens need 14 to 16 hours of light to lay at full rate, and natural daylight falls below that in winter for most of the country. Marans hold their winter laying better than many breeds, so the winter dip is real but moderate, and supplemental light closes most of the gap if you choose to use it.

Broodiness

Marans range from low to moderate in broodiness, and most lines would rather keep laying than sit. When a hen does go broody she pauses laying for roughly three to four weeks but tends to make a calm, capable mother. Because few Marans sit reliably, broodiness usually has only a small effect on the flock’s yearly total.

Feed protein

Keep layer feed at 16 to 18% protein with added calcium, and offer free-choice oyster shell. Strong shells matter even more here, since the heavy pigment coating partly clogs the shell pores, so thin or rough shells are worth correcting early with a calcium check.

How Marans compare

First-year production under normal backyard conditions.

Breed	Annual eggs	Egg color	Type	Vs Marans
Marans	150 to 200	Dark chocolate brown	Dual-purpose	Baseline
Easter Egger	200 to 280	Blue, green, or varied	Dual-purpose	Higher
Rhode Island Red	250 to 300	Brown	Heritage	Higher
Australorp	250 to 300	Light brown	Dual-purpose	Higher
Brahma	150 to 200	Brown	Dual-purpose	Similar

The honest verdict: a Marans is the pick when you want the most striking egg basket on the block and a calm, cold-hardy dual-purpose bird to go with it. If raw volume is the goal, a Rhode Island Red or an Australorp will out-lay a Marans by 50 to 100 eggs a year, and a hybrid like an ISA Brown beats them all. But none of those gives you the deep chocolate shell that makes the Marans famous. Buy from a breeder who tells you whether the line is selected for color or for numbers, and match that to what you actually want.

Use the breed selector quiz to compare breeds against your goals and setup.

Frequently asked questions

How many eggs does a Marans lay per year?

A Marans hen lays about 150 to 200 eggs per year, which makes her a moderate layer. Dark-egg show lines sit near the bottom of that range, while Cuckoo and production lines reach 180 to 220.

How many eggs does a Marans lay per week?

A laying Marans produces about 3 to 4 eggs per week at her peak. That works out to roughly an egg every other day across the full year once winter and molt are folded in.

When do Marans start laying eggs?

Marans usually lay their first egg between 22 and 28 weeks of age, about 5 to 6 months. That is a touch earlier than many heritage breeds, and they tend to settle into a steady rhythm quickly.

Why are Marans eggs so dark, and do all Marans lay dark eggs?

Marans eggs are dark because the hen coats the shell with extra brown pigment in the final hours before laying, and not every Marans lays the deepest shade. Color depends heavily on the breeding line, so well-selected birds lay rich chocolate eggs while non-selected ones can lay an ordinary medium brown.

How many eggs will 6 Marans hens lay per year?

Six Marans hens lay roughly 900 to 1,200 eggs in their first year, depending on line and management. Run your own numbers with the egg production calculator, which adjusts for flock age and season.

Do Marans lay eggs in winter?

Yes, Marans are cold-hardy and lay reasonably well through winter, with a moderate dip in the shortest days. As a bonus, their eggs are at their darkest and richest during the cool months.

Which Marans variety lays the most eggs?

Cuckoo Marans are generally the most productive variety, often reaching 180 to 220 eggs a year, while Black Copper Marans are prized more for the darkest shells than for volume. Within any variety, the specific line still matters more than the name.

Sources: My Pet Chicken (mypetchicken.com), Tractor Supply Co. (tractorsupply.com), Fresh Eggs Daily (fresheggsdaily.blog), Cackle Hatchery (cacklehatchery.com). For health concerns about your flock, consult a licensed poultry veterinarian. Last reviewed June 2026.