Plan my flock

How many chickens do I need?

Start with the eggs you eat in a week. We size the flock by breed type, then sketch the coop and feed it needs.

How many eggs a week?

Hens lay best in their first two years and slow down in winter and during the fall molt. The "cautious" number covers that.

Your flock

2–3hens

For a dozen eggs a week from high-production hybrids.

2hens in peak season
3hens to be safe
—sq ft of coop floor
—lb of feed a week

Keep at least three hens: chickens are flock birds.

Size the coopBudget the feed

The rules behind the numbers

5–6 eggs/weekEggs a week, high-production hybridPenn State Extension · Utah State University Extension
2–4 eggs/weekEggs a week, heritage breedColorado State University SOURCE · Penn State Extension · Utah State University Extension
250–300 eggs/yrEggs a year, hybrid henUtah State University Extension · Penn State Extension · Oregon State University Extension / PNW +2 more
150–250 eggs/yrEggs a year, heritage henSources differ widely: Penn State gives 50–100 a year for heritage birds, Utah State's breed table 150–300.Utah State University Extension · Penn State Extension
14–16 hoursDaylight hens need to keep layingPenn State Extension · University of Maine Cooperative Extension · University of Arizona Cooperative Extension +6 more
8–12 weeksFall molt: weeks with few or no eggsUniversity of Delaware CANR · Penn State Extension · Poultry Extension +2 more

Questions

How many chickens do I need for a dozen eggs a week?

About 2–3 high-production hens (hybrids lay 5–6 eggs a week each) or 3–6 heritage hens (2–4 a week). Add one or two extra for winter, molting and older hens.

How many eggs does a chicken lay a day?

At most one. A hen needs a little over a day to form an egg, so even top layers skip days: high-production hybrids average 5–6 eggs a week and heritage breeds 2–4. Laying needs 14–16 hours of light, so it slows in short winter days.

Do chickens need a rooster to lay eggs?

No. Hens lay eggs with or without a rooster. A rooster is only needed if you want fertile eggs to hatch chicks; check local rules first, because many towns that allow hens do not allow roosters.

Do older hens lay fewer eggs?

Yes. Laying is strongest in the first two years and then tapers. One feed company's example flock lays about 80% as many eggs in year two and about half by year five; extension guides agree on the trend, not the exact numbers.

What is the smallest flock I should keep?

Chickens are flock birds and get lonely and stressed alone. Plan for at least three hens, so the flock still has company if one is lost or sick.

Sources

  1. 1Successfully Raising a Small Flock of Laying ChickensPenn State Extension (P. Clauer; updated 2016-04-22)
  2. 2Managing Chickens From Chicks to Peak Egg ProductionUtah State University Extension (J. Okoh, E. Perry; October 2025)
  3. 3Want to raise backyard chickens for eggs? 5 things to know firstColorado State University SOURCE (J. DeLoss quoting CSU Extension specialists; 2025-04-10)
  4. 4Management Requirements for Laying FlocksPenn State Extension (P. Clauer; updated 2016-05-17)
  5. 5Why did my chickens stop laying? (PNW 565)Oregon State University Extension / PNW (J. Hermes; 2003, reviewed 2023)
  6. 6Eggs or Meat...Does the same chicken produce both?University of Delaware CANR (G. Cartanza; 2023-03-28)
  7. 7Feeding Chickens for Egg Production in Small and Backyard FlocksPoultry Extension (J. Jacob, University of Kentucky)
  8. 8Management of the Small Flock of Chickens (MF-2390)Kansas State University Research and Extension (R. S. Beyer; May 1999)
  9. 9Backyard & Small Poultry Flock Management Series: Feeding the Laying Hen (ANR-2913)Alabama Cooperative Extension System (Pacheco, Gulizia, Downs; Aug 2022)
  10. 10Maine Poultry Facts: Lighting For Small-Scale Flocks (Bulletin #2227)University of Maine Cooperative Extension (Hawes; updated Brzozowski, Coffin, Knight; 2009, 2021)
  11. 11Lighting Schedules for Arizona Backyard Laying Flocks (az2185)University of Arizona Cooperative Extension (A. Wright; Jan 2026)
  12. 12Artificial Lighting for Winter Egg ProductionPenn State Extension (A. Bigge; updated 2025-09-09)
  13. 13Small-scale Poultry Housing (2902-1092)Virginia Cooperative Extension (L. Jacobs, P. Clauer; 2023-04-28)
  14. 14Factors Affecting Egg Production in Backyard Chicken Flocks (PS-35)UF/IFAS Extension (Jacob, Wilson, Miles, Butcher, Mather; rev. 2017, reviewed 03/2025)
  15. 15Chicken housing (housing requirements)University of Maryland Extension (J. Moyle; updated 2022-05-11; space table cites Clauer 2009)
  16. 16Egg goals for your backyard chickens: How egg production is affected by age (poster)Purina Animal Nutrition (2023)

More planners

All planners
Coop plannerFloor space, run, roost bars, nest boxes and vents for your flockFeed & costHow much feed your flock eats a day, a month and a year, and what it costsFirst egg dateEnter the hatch date and breed to see the week your pullets should layHatch calendarA day-by-day incubation calendar: turning, candling, lockdown and hatch dayBrooder tempsWeek-by-week heat, space and care for chicks until they move outsideBreed finderAnswer six questions and meet the breeds that fit your yard and climate
esc

↑↓ to move · enter to open