How Many Eggs Does an Australorp Lay Per Year?
An Australorp hen lays 250 to 300 eggs per year. Realistic estimates by age and season, a month-by-month breakdown, and a formula for any flock size.
An Australorp hen lays 250 to 300 eggs per year in a typical backyard setting. The biggest variable is age: a first or second year hen sits near the top of that band, and output tapers after year three. Australorps hold their lay through winter better than most heritage breeds, so for a healthy first-year hen in a well-managed flock the most realistic estimate is 270 to 300 eggs annually.
Want the full picture on this breed? See our Australorp breed profile — temperament, care needs, and climate fit.
Use the egg production calculator to model your specific flock.
Production ranges
| Scenario | Annual eggs | Avg / week | Avg / day | When this happens |
|---|---|---|---|---|
| Low | ~250 | ~4.8 | ~0.68 | Older bird past year three, hot summer climate, or a heavy molt year |
| Normal | ~275 | ~5.3 | ~0.75 | Healthy hen, Year 1 to 2, natural daylight, standard 16% layer feed |
| High | ~300 | ~5.8 | ~0.82 | First-year hen, mild climate, 16-hr lighting, 16 to 18% protein |
The Normal row is the most realistic starting point for planning. It assumes a sound first or second year hen on natural daylight, a normal autumn molt, and a 16 percent layer ration. It already folds in the weeks she takes off to molt and the short winter days, so you do not need to discount it further.
Australorps are unusually steady through winter. Where many heritage breeds stall in December, a young Australorp often keeps laying on natural light alone. That is why the gap between her Low and High rows is narrower than for breeds that quit cold weather.
By year, month, week, and day
| Time period | Low (~250/yr) | Normal (~275/yr) | High (~300/yr) |
|---|---|---|---|
| Per year | 250 | 275 | 300 |
| Per month (average) | ~21 | ~23 | ~25 |
| Per week (average) | ~4.8 | ~5.3 | ~5.8 |
| Per day (average) | ~0.68 | ~0.75 | ~0.82 |
| Dozens per year | ~21 | ~23 | ~25 |
A hen lays one egg roughly every 24 to 26 hours at full production, and she skips a day now and then to let her system reset. That is why even a strong Australorp averages well under one egg a day across a full year. The daily figures above already account for those natural gaps.
The formula
Scale the estimate to any flock size with one calculation:
Weekly eggs = Number of hens × 6 × Age Factor × Season Factor
The 6 is the Australorp peak rate of about 6 eggs per hen per week in her first year. The two factors below pull that peak down to a realistic number for the hen’s age and the time of year.
| 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 |
Australorps are a dual-purpose heritage breed, so they follow this standard decline curve rather than the faster drop-off seen in production hybrids. Their winter season factor also runs a little kinder than the average breed, because young birds tend to keep laying in the cold.
Example: 6 hens × 6 × 0.84 (Year 2) × 0.75 (winter, no light) = 22.7 eggs per week, or about 3 to 4 eggs a day from the flock through the coldest months.
How production drops year over year
| Year | Per hen / year | Per hen / week | 6-bird flock / year | 6-bird flock / week |
|---|---|---|---|---|
| Year 1 (peak) | ~275 | ~5.3 | ~1,650 | ~32 |
| Year 2 | ~231 | ~4.4 | ~1,385 | ~27 |
| Year 3 | ~182 | ~3.5 | ~1,090 | ~21 |
| Year 4 | ~138 | ~2.6 | ~825 | ~16 |
| Year 5 | ~105 | ~2.0 | ~630 | ~12 |
Production slides down gradually rather than stopping at a set age. An Australorp will often lay into her sixth or seventh year, just fewer eggs each season. If a steady basket matters to you, add two or three young pullets every other year so the flock average stays high while your older hens ease off.
Month by month (first-year hen)
| Month | Natural light only | With 16-hr coop lighting | Notes |
|---|---|---|---|
| January | 18 | 24 | Short days, but a young Australorp keeps going |
| February | 20 | 25 | Daylight lengthening |
| March | 24 | 26 | Strong spring climb |
| April | 26 | 27 | Near peak |
| May | 27 | 28 | Peak month |
| June | 26 | 27 | Early heat begins to bite |
| July | 22 | 24 | Black plumage absorbs heat, laying slows |
| August | 22 | 24 | Hottest stretch in most regions |
| September | 24 | 26 | Cooler air, production recovers |
| October | 24 | 26 | Last strong natural-light month |
| November | 21 | 25 | Holding better than most breeds |
| December | 17 | 24 | Minimum without lighting |
A first-year Australorp usually lays through her first winter on natural light, because she grew her feathers as a chick and does not take a full molt that first fall. Heat, not cold, is her weak season: a black bird in a 95-degree-plus summer will slow more than she does in January. If you choose to add supplemental light, start in early September before the days shorten, bring the coop up to about 14 to 16 hours total, and keep the schedule consistent. Lighting is optional, and many keepers prefer to let hens rest naturally over winter.
What changes the number
The single biggest lever is age, followed by climate and feed. Here is how each one moves an Australorp’s count.
Age and laying years
A first or second year hen does most of the work. Australorps lay their best from about 6 months to 2 years, then ease off, with a clear step down after year three as the age factors above show. They keep laying longer than many breeds, just at a lower rate each season.
Heat stress
Heat is the Australorp’s real limiter, not cold. Their dense black plumage absorbs sunlight, so laying slows noticeably once daytime highs push past the mid-90s Fahrenheit, and keepers in very hot, humid regions report a real summer dip. Give them deep shade, constant cool water, and airflow through the coop. If you live somewhere with long, brutal summers, a lighter-colored breed may out-lay them from June to September.
Daylight and winter
Australorps are among the best cold-weather layers in the backyard world. Their loose feathering insulates them and their large bodies resist cold stress, so young hens often lay right through winter on natural light. Hens have small combs that shrug off frost, but a rooster’s larger comb and wattles can frostbite in hard freezes and should be coated with petroleum jelly. They also dislike snow, so a covered, dry run keeps them active and laying in winter.
Feed protein
Feed sets the ceiling on what genetics can deliver. Run a 16 percent layer ration through the laying season and offer oyster shell free-choice for shell strength. During the autumn molt, bump protein to 18 to 20 percent so birds rebuild feathers without pulling from egg output. Keep pullets on starter or grower feed until they actually start laying, then switch, so their frames finish growing first.
Annual molt
The yearly molt is the largest planned gap in the count. An Australorp’s first real molt usually arrives around 18 months of age and then every fall after that, lasting roughly 8 to 12 weeks while she diverts protein into new feathers instead of eggs. The Normal annual figure already accounts for this pause.
Broodiness
Broodiness costs you a few weeks here and there but is not a major drag for this breed. Only about 10 to 20 percent of Australorp hens go broody, and those that do tend to make calm, reliable mothers. A broody hen stops laying until she is broken off the nest or finishes raising chicks.
For an unexplained sharp drop in laying, signs of illness, parasites, or injury, consult a licensed poultry veterinarian or your local agricultural extension service rather than guessing.
How Australorps compare
First-year production under normal backyard conditions:
| Breed | Annual eggs | Egg color | Type | Vs Australorp |
|---|---|---|---|---|
| Australorp | 250 to 300 | Light brown | Dual-purpose | Baseline |
| ISA Brown | 300 to 320 | Brown | Hybrid | Higher |
| Rhode Island Red | 250 to 300 | Brown | Heritage | Similar |
| Plymouth Rock | 200 to 280 | Brown | Heritage | Lower |
| Buff Orpington | 180 to 220 | Light brown | Heritage | Lower |
The Australorp is one of the best all-round picks for a backyard or homestead flock. It nearly matches a Rhode Island Red for output but is calmer to handle, and it beats most heritage breeds while staying cold-hardy and beginner-friendly. There is a nice piece of history in this table too: Australorps were bred in Australia from Buff Orpington’s English ancestor specifically to lay more, which is why they out-produce the Orpington by a wide margin. The breed even set a world record in 1920s Australian laying trials, when one hen laid 364 eggs in 365 days.
Skip the Australorp only if you want the absolute highest output, where a hybrid like the ISA Brown wins, or if you live in a relentlessly hot climate where a black bird struggles. For most keepers who want steady eggs, a gentle temperament, and a bird that handles winter, it is hard to beat.
Use the breed selector quiz to compare breeds against your goals and setup.
Frequently asked questions
How many eggs does an Australorp lay per year?
An Australorp hen lays 250 to 300 eggs per year in a typical backyard, with a realistic Normal of about 275. First and second year hens land at the top of that range, while older birds and very hot climates pull it toward the low end.
How many eggs does an Australorp lay per week?
A healthy Australorp lays about 5 to 6 eggs per week at peak, in her first and second years. That rate eases as she ages and during the autumn molt.
When do Australorps start laying?
Australorps usually lay their first egg between 18 and 24 weeks of age, or about 5 to 6 months. Some well-bred lines start a little earlier, around 16 to 18 weeks.
Do Australorps lay in winter?
Yes, Australorps are some of the best winter layers among heritage breeds. Young hens often keep laying through the cold on natural daylight alone, thanks to dense insulating feathers and good cold tolerance.
How many eggs will 6 Australorp hens lay per year?
Six first-year Australorps lay roughly 1,650 eggs a year, or about 32 a week, under normal conditions. That total drops as the flock ages, so plan on adding young pullets every other year to hold the average. Use the egg production calculator to model your own flock by age and season.
How long do Australorps keep laying?
Australorps lay productively for about 3 to 4 years, then continue at a reduced rate into their sixth or seventh year. They are a long-lived, durable breed rather than a burn-bright hybrid.
Why did my Australorp stop laying?
The most common reasons are the autumn molt, short winter days, summer heat, broodiness, or age. If none of those fit and the stop is sudden, check for illness, parasites, or injury and consult a poultry vet or extension service.
Sources: Kalmbach Feeds (kalmbachfeeds.com), Grubbly Farms (grubblyfarms.com), The Featherbrain (thefeatherbrain.com), Chickens and More (chickensandmore.com). For health concerns about your flock, consult a licensed poultry veterinarian. Last reviewed June 2026.