A Barred Rock is a Plymouth Rock. “Plymouth Rock” is the name of the breed, and “Barred” is one of its colors, the very first one. So if one chick listing says Barred Rock and the next says Barred Plymouth Rock, you’re looking at the same bird under a short name and a long one. Your real choice is a different one. You pick a color, and with Barred Rocks you also pick a line. A hatchery’s production birds are bred to lay. Its show birds are bred to look the part, and they lay fewer eggs.
I rewrote this page from 21 sources, and you’ll find all of them at the bottom. Breed facts come from The Livestock Conservancy and from the breed pages of three hatcheries (McMurray, Meyer, Cackle). For the history, I leaned on Illinois Extension and the Conservancy. Jacquie Jacob of the University of Kentucky explains the barring gene. When two sources give different numbers, I’ll tell you whose number is whose.
A word on the photos. The hen at the top is barred with a single comb, which is how a Barred Rock looks, but the photographer didn’t name her breed. Further down, the Dominique is labeled as one by the person who took it. Every other bird here is a stand-in, and I’ll tell you what each one shows as we go.
The short version.
- Same bird. McMurray Hatchery says the name Plymouth Rock “actually refers to the entire breed, not just the Barred variety.”
- Seven colors. Barred came first and Blue came last, going by a Delaware State University fact sheet.
- Same build under every color. You get a single comb with five points on a bird with yellow legs that lays brown eggs. Standard weights are 9.5 pounds for a rooster and 7.5 pounds for a hen.
- Line matters more than color. Cackle Hatchery puts its production Barred Rocks at 200 to 220 eggs a year and its show line at 120 to 180.
- Roosters look lighter. They carry two copies of the barring gene, and hens carry one.
- Watch for the Dominique, the look-alike. It has a rose comb, and the Rock has a single comb.
A Barred Rock Is a Plymouth Rock
The hatcheries all say it their own way. Cackle’s Barred Rock page says “Barred Rock” is “the common short name for the Barred Plymouth Rock.” McMurray says that the Plymouth Rock name “actually refers to the entire breed, not just the Barred variety.” And on McMurray’s White Rock page, the hatchery opens its answer to one buyer with five words. “Plymouth Rock is the breed name.”
The Livestock Conservancy tells it from the other end. It says, “The original Plymouth Rock chicken was Barred,” and the other colors came later. Turns out, in the early years a Plymouth Rock simply was a barred bird. The color word only got useful once there were other colors to tell apart. That last part is my reading, not something a source spells out.
You may have read somewhere that a Plymouth Rock is a different bird with random splotches. This very page used to say that. I couldn’t find it in a single source I read for this rewrite. Every breed page I checked treats Barred as one color of one breed.
So when you’re shopping, read the color word. A Barred Plymouth Rock and a Barred Rock are the same chick. A White Rock is the white variety of the same breed. A listing that only says “Plymouth Rock” with no color deserves a closer look, because it could be any of them. In the photo, the bands run across every feather, light then dark then light again. That’s the look all those names point at.
How One Breed Ended Up With Two Names
The Conservancy says the Plymouth Rock was first shown in Boston in 1849. Those first birds seemed to “lose their identity,” and the breed dropped out of sight for about 20 years. It came back at a poultry show in Worcester, Massachusetts, in 1869, and today’s Rocks come from those birds. Illinois Extension dates the Boston show to 1829, so you’ll see both years out there.
What went into the first Rocks is the fun part. Illinois Extension describes a Dominique rooster crossed with Black Cochin or Black Java hens in Putnam, Connecticut. Then it adds a twist. “The Dominique male used was not the American or Rose-Comb Dominique, but rather a single-combed, hawk-colored fowl.” Hawk-colored is another name for barred, the Conservancy’s Dominique page says. The black hen in the photo isn’t a Java or a Cochin as far as I know, since her breed wasn’t recorded. I put her here because the story starts with black hens like her.
Then the comb settled things. Back then, both breeds could carry either kind of comb, the Conservancy says. In 1870, the people running a poultry show in New York ruled that rose-combed barred birds would be shown as Dominiques. Single-combed ones would go in as Plymouth Rocks. A Standard of Excellence confirmed the ruling in 1871. When the American Poultry Association put out its first standard in 1874, both breeds were in it.
After that, the Rock took off. In the Conservancy’s words, “until World War II, no breed was ever kept and bred as extensively.” Its chicks feather fast and are mature by 8 to 12 weeks, the Conservancy says, so the Rock made a good broiler too. It was one of the foundation breeds of the broiler industry in the 1920s. As for the name, Meyer Hatchery’s White Rock page says the breed was “named after the rock the Pilgrims first stepped foot on.” No other source I read explains the name, so I’d file that one under Meyer’s say-so.
Seven Colors, One Breed
Delaware State’s fact sheet counts seven varieties, “with Barred being the oldest and Blue being the most recent variety.” Here’s each one, with what my sources say about where it came from.
- Barred. The first color, and the one in the 1874 standard.
- White. Illinois Extension says White Rocks were “white sports of the Barred variety,” meaning white birds that turned up in barred flocks, though other strains came from other white fowl. Cackle says the APA recognized them in 1888. White Rock hens later became the female side of the Cornish broiler cross, Cackle adds.
- Buff. From Rhode Island, not far from Fall River, Massachusetts, and first shown as “Golden Buffs,” says Illinois.
- Silver Penciled. Made in New York with Dark Brahma and Silver Penciled Wyandotte blood, per Illinois. McMurray says the feathers are “ideal for fly tying.”
- Partridge. Illinois lists six breeds that went into it. Cackle says it’s been in the standard since 1910 and “remains relatively rare.”
- Columbian. From Ohio, where Light Brahmas and Columbian Wyandottes were crossed with Barred and White Rocks, per Illinois.
- Blue. The newest one, per Delaware State.
Don’t expect all seven at your feed store. Of the three hatchery sites I checked, all three list Barred and White. McMurray told one buyer it hatches four colors of Rock. Meyer calls its Silver Penciled “the newest and rarest addition” to its Rock lineup.
About the hen in this photo. She wears the Columbian pattern, a white body with black in the neck and tail. But look at her comb. It’s small and low, not the tall single comb a Rock should have, so she’s showing you the pattern and not the breed. The photographer didn’t say what she is.
What Stays the Same in Every Color
The color changes, but the bird under it mostly doesn’t. Every Rock should carry “a bright red, single comb,” the Conservancy says, with “five evenly serrated points.” Its front and back points run a bit shorter than the middle ones. Its face is red. So are its wattles and earlobes. Rocks have yellow skin and legs, with four toes on each foot.
Those red earlobes matter for your egg basket. Delaware State’s sheet says red earlobes mean a Rock will lay brown-shelled eggs, and every Rock color is listed as a brown-egg bird on the hatchery pages I read. Shades can shift, though. Illinois Extension says shells run from very light to dark brown, “depending on the strain and the stage of production.”
On paper, size is close across the colors. Both the Conservancy and McMurray put roosters at 9.5 pounds and hens at 7.5 pounds. In practice, the hatcheries hedge. McMurray calls its Buffs “possibly a little smaller” than the other Rocks, and it says its Partridges are “not quite as large as their cousins.” Meyer lists Silver Penciled hens at 6 pounds and roosters at 7.5 pounds.
Then there are the legs. The pullet in this photo isn’t a Rock, but those bright yellow legs are the color I mean. Don’t worry if yours come out paler. A buyer told McMurray that their Barred Rocks had pale legs. McMurray wrote back that its birds “do have yellow legs and yellow beak, however the brightness will vary.”
Temperament doesn’t change with color either. Rocks are “a chatty but quiet breed,” says the Conservancy, and “a good choice for a first-time chicken owner.” It says they’re cold-hardy thanks to early feathering. Cackle’s one winter warning is about that single comb. Keep an eye out for frostbite in a hard cold snap, and keep the coop dry with good airflow.
Production Line or Show Line
This is the difference I’d think about before the color. A hatchery’s Barred Rocks can come from a production line bred for eggs or from an exhibition line bred to match the show standard. Cackle sells both, so it gave me the cleanest comparison I found.
- Production. Cackle estimates 200 to 220 eggs a year. It has kept this strain since 1936 and lists it as a “Setter,” so the hens may go broody.
- Exhibition. Cackle estimates 120 to 180 eggs a year. It got this seed stock from breeder Kraig Shafer in 2020.
Cackle is upfront that its production birds aren’t show quality, but it says those hens lay a bit more. McMurray calls its own Barred Rocks “a Production Breed” and puts them at 225 eggs a year. Meyer says 4 to 6 eggs a week, from hens that start laying at 16 to 20 weeks. Looking at the breed as a whole, the Conservancy says about 200 large brown eggs a year. It says laying slows after the first few years, but hens can keep going into their tenth year.
Broodiness swings the most from line to line. On Barred Rocks alone, McMurray says a hen is “not very likely” to sit, while Meyer just says yes. Rock hens are “usually good sitters and mothers,” in the Conservancy’s words. A University of Georgia sheet from 2009 says they’re good mothers “but do not brood frequently.” So if you want a hen that’ll hatch you a clutch, ask the hatchery about its line, not only the color.
You may also see “heritage” on a listing. The Conservancy’s definition asks for more than an old breed. First, it has to be a breed the APA recognized before the mid-20th century. Birds have to mate naturally and grow slowly, reaching market weight in no less than 16 weeks, and breeding hens should stay productive for 5 to 7 years. The Plymouth Rock clears the first bar easily. Whether a given hatchery’s birds meet the rest depends on how that line is kept, so I wouldn’t take the word on faith.
The hens in the hoop house aren’t Rocks. They’re brown laying hens on an organic farm in Hudson, New York, doing the job a production line is bred for. If you’re weighing Rocks against Reds for eggs, our Rhode Island Red egg production page has the Red’s numbers.
Why a Barred Rock Rooster Looks Lighter
Put a Barred Rock rooster next to a hen and he’ll usually look lighter. That’s the barring gene at work. Jacquie Jacob explains that it sits on the Z chromosome. Roosters carry two Z chromosomes and hens carry one, so a rooster gets a double dose of barring. With two doses, his white bars come out broader. Jacob’s page puts it plainly. “As a result, males are overall lighter in color.”
The Conservancy explains what the gene does to a feather. It doesn’t paint dark bars onto a light feather. It “prevents pigment on colored plumage,” which leaves light bars on a dark one.
That same gene helps you sort chicks. Barred Rock chicks are “black with a white spot on top of the head,” says a University of Tennessee 4-H sheet. Jacob says males hatch with a large white spot and females with a smaller, narrower one. Reading that spot “has been found to be about 80% accurate,” Jacob writes. Cackle lists its Barred Rock sexing at 85 to 90 percent accuracy. Honestly, I’d plan on a surprise rooster now and then.
There’s also a cross built around this gene. Jacob explains that a non-barred rooster, often a Rhode Island Red or a New Hampshire, over barred hens gives you barred sons and non-barred daughters. At hatch, the sons have the white head spot. “Crossing a barred male with a non-barred female will not work,” Jacob adds. Our Rhode Island Red vs Plymouth Rock page walks through that cross, along with more of the early history. If you’ve got a young bird you can’t call yet, try our Rooster or Hen? tool.
The chick in the photo is a pale one from that same New York farm, not a Rock. A Barred Rock chick looks very different, mostly black with that white spot on its head.
The Barred Bird That Isn’t a Rock
If a barred hen has a rose comb instead of an upright single one, she’s most likely a Dominique. Cackle’s Barred Rock page puts it in two sentences. “Barred Rocks have a single upright comb. Dominiques have a rose comb.” The Conservancy describes the Dominique’s as “a rose comb with a short upward curving spike.”
The Dominique is the older bird. It’s “America’s first, and oldest, chicken breed,” says the Conservancy, and it’s smaller than the Rock. McMurray lists Dominique roosters at 7 pounds and hens at 5 pounds, against 9.5 and 7.5 pounds for its Rocks. That makes a Dominique hen 2.5 pounds lighter, by my math. Dominique hens historically averaged 230 to 275 eggs a year, the Conservancy says, while McMurray estimates 150 to 220 for its birds. And as with the Rock, “Hens may be broody or not – depending on their line.”
That rose comb has a perk. Its low profile, along with tight feathering, makes the Dominique “more resistant to frostbite than many other breeds of fowl,” the Conservancy says. Its barring helps too. It makes the bird “less conspicuous to predators,” the Conservancy adds, which counts for something if hawks work over your run.
The face in the photo belongs to a Dominique, going by the photographer’s own label.
Picking Your Rock
Here’s my call, based on what these sources say. It’s my read, not a rule.
- Most backyard flocks. Go with a production Barred Rock. You get the classic barred look on a calm bird, and Cackle says its production hens lay more than its show hens.
- Showing at the fair. Get an exhibition line bred to the standard, and expect fewer eggs.
- A hen that might hatch chicks. Ask about the line first. Among the colors, McMurray rates its Buff Rocks “very likely” to sit.
- Fewer broody spells. Try a White Rock. Meyer’s White page says no on broody, and McMurray says “not very likely.”
- Something different to look at. Silver Penciled or Partridge will do it, but you may have to hunt for chicks. Meyer also puts its Silver Penciled at 3 to 5 eggs a week, with laying starting at 20 to 24 weeks.
If you’re still torn between breeds, not just colors, try our Chicken Breed Finder. And if it’s a golden bird you’re after, our Buff Orpington vs Buff Rock page sets the Buff Rock against the other big golden hen people tend to confuse it with.
The pullet walking up to that hand isn’t a Rock, by the way. Her breed wasn’t recorded. But the Conservancy calls Rocks “a good family breed as they are good with children,” and a pullet walking right up to a hand is a fair picture of that.
Sources
- Livestock Conservancy: Plymouth Rock Chicken.
- Livestock Conservancy: Dominique Chicken.
- Livestock Conservancy: Heritage Chicken Definition.
- University of Illinois Extension: History of Breeds.
- Delaware State University: Plymouth Rock fact sheet (Amanda Evans with Dr. Brigid McCrea, PDF).
- University of Georgia Poultry Science: Which Breed of Chicken Should I Put in My Backyard Flock? (January 2009, PDF).
- University of Tennessee Extension, Roane County: Learn About Your Chick Chain Options (PDF).
- Jacquie Jacob, University of Kentucky, on the Poultry Extension site: Sexing Day-Old Chicks.
- McMurray Hatchery: Barred Plymouth Rocks.
- McMurray Hatchery: White Plymouth Rocks.
- McMurray Hatchery: Buff Plymouth Rocks.
- McMurray Hatchery: Partridge Plymouth Rocks.
- McMurray Hatchery: Silver Penciled Plymouth Rocks.
- McMurray Hatchery: Dominiques.
- Meyer Hatchery: Barred Plymouth Rock.
- Meyer Hatchery: White Plymouth Rock.
- Meyer Hatchery: Silver Penciled Plymouth Rock.
- Cackle Hatchery: Barred Rock, production type (with its questions and answers).
- Cackle Hatchery: Barred Plymouth Rock, exhibition type.
- Cackle Hatchery: White Rock.
- Cackle Hatchery: Partridge Plymouth Rock.
Sources checked October 27 and 28, 2026. That 2.5-pound gap between the two hens is my math from McMurray’s weights. We aren’t vets. If a bird looks sick, call a vet who sees poultry.
Related read: How to Raise Chickens for Eggs — Instant PDF download. Secure checkout by Stripe
