Furry Diary

Plymouth Rock

Gallus gallus domesticus

Also called Barred Rock, Plymouth Rock chicken, Rock

Recognised breedShort profile

From United States (Massachusetts), mid-19th century12

A friendly guide, not veterinary advice. For anything about your pet's health, ask your vet.

At a glance the quick version

Weight, male3.4 to 4.3 kg12
Weight, female2.9 to 3.4 kg12
Sizelarge

Wikipedia gives standard minimums of 3.4 kg (cock) and 2.9 kg (hen); The Livestock Conservancy gives 9.5 lb (about 4.3 kg) and 7.5 lb (about 3.4 kg). Bantams: up to 1.4 kg (male) and 1.1 kg (female).

Calm and docile, good with children
Reliable layer of about 200 large brown eggs a year
Cold-hardy and easy to manage
21

Looks how to spot one

feathers

A large, deep-bodied, dual-purpose chicken with a single five-pointed comb, red face and wattles, and yellow skin and unfeathered yellow legs. The classic Barred variety has crisp alternating dark and light bars across every feather.12

ColoursBarredWhiteBuffSilver PenciledPartridgeColumbianBlue2

Personality what they are like

A friendly, even-tempered hen that settles easily into a mixed flock. Its easy nature makes it a favourite for families, first-time keepers and youth poultry clubs.2

Daily activity how busy a day looks

Moderate; like all chickens it needs daily time outdoors to scratch, forage and dust bathe.3

Grooming and care the hands-on bits

Chickens groom themselves by preening and dust bathing, so give them a dry dust-bath area, keep bedding clean and dry, and check the flock and collect eggs daily.3

Home where they are happiest

A secure, dry, well-ventilated coop with perches and nest boxes, plus a roomy outdoor run with a dusty patch for bathing.3

Food basics what goes in the bowl

A complete commercial poultry ration suited to age (chick, grower, then layer feed), with grit, a calcium source such as oyster shell for layers, and clean water at all times.3

Company who they like around

A flock bird; keep at least three hens that get along.3

The story where it all began

The Plymouth Rock was first shown in Boston in 1849, then reappeared in 1869 in Worcester, Massachusetts, where D.A. Upham crossed Black Java hens with a barred cock. Accepted by the American Poultry Association in 1874, it became the most widely kept chicken in the United States until the Second World War.12

Fun facts for the dinner table

  1. 1

    Until the Second World War, no chicken breed in the US was kept and bred as widely as the Plymouth Rock.2

  2. 2

    In the 1920s it became a foundation breed for the American broiler (meat chicken) industry.2

  3. 3

    It was part of the very first American Standard of Perfection published in 1874.1

  4. 4

    Early breeders credited a mix of Dominique, Java, Cochin, Brahma and Spanish chickens in its making.2

Recognised by the official bits

American Poultry Association
Included in the first American Standard of Perfection in 1874; varieties include Barred (original), White, Buff, Silver Penciled, Partridge, Columbian and Blue.2
Poultry Club of Great Britain
Recognises five colour varieties.1
Entente Européenne (EE)
Lists ten plumage colours.1
The Livestock Conservancy
Graduated from the Conservation Priority List in 2023 ('recovering').2

The care rhythm Furry Diary remembers it for you

A typical home-care rhythm for a Plymouth Rock. It is our own starting plan, not a vet's advice, and you can change every line in the app.

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Where this comes from

Every breed page shows where each fact comes from. If we got something wrong, sorry, we are pet people, not a science magazine. Tell us at support@furrydiary.app and we will fix it.

  1. Plymouth Rock chicken - Wikipedia en.wikipedia.orgused for origin, history, standards, weights, comb, eggs, temperament
  2. Plymouth Rock Chicken - The Livestock Conservancy livestockconservancy.orgused for history, APA varieties, weights, temperament, conservation status, facts
  3. Chickens - RSPCA rspca.org.ukused for general care, housing, diet, social needs

Checked 2026-09-30. Text is written in our own words from these sources.