Jersey Giant chickens are one of the largest standardized chicken breeds in the United States. They were developed in New Jersey as heavy table birds, but today most backyard keepers value them as calm, slow-growing dual-purpose chickens.
Their size is impressive, but it also changes how you should house and manage them. Jersey Giants need more floor space, wider roosts, larger nest boxes, lower perches, and enough time to mature before you judge their final body size.
This guide covers the breed’s real history, APA varieties, standard weights, egg production, temperament, growth rate, broodiness, climate tolerance, feeding, housing, and whether a Jersey Giant makes sense for your backyard.
Jersey Giant Chicken at a Glance
| Origin | New Jersey, United States |
|---|---|
| Developed | 1870s–1890s |
| Primary use | Meat and eggs |
| APA varieties | Black, White, Blue |
| Standard cock weight | About 13 lb |
| Standard hen weight | About 10 lb |
| Egg color | Brown, ranging from light cream-brown to darker brown |
| Egg size | Large to extra large |
| Approx. eggs/year | About 150–200; some heritage charts place good lines around 175–185 |
| Temperament | Calm, docile, generally friendly |
| Broodiness | Can go broody; large hens may accidentally break eggs |
| Growth rate | Slow compared with modern meat birds |
| Climate | Better suited to cooler climates; needs heat management in summer |
What Is a Jersey Giant Chicken?
The Jersey Giant is a true breed, not a hybrid and not a sex-linked chicken.
It belongs to the American Class and was developed specifically to produce a very large table bird. The breed later became valued as a dual-purpose chicken because hens also lay a useful number of brown eggs.
Jersey Giants are especially well suited to keepers who want a large, calm bird and do not mind slower growth or higher feed use.
History and Origin
John and Thomas Black developed the Jersey Giant between roughly 1870 and 1890 in Burlington County, New Jersey, near Jobstown.
Their goal was ambitious: create a large chicken that could compete with turkey as a premium table bird.
The Livestock Conservancy identifies Black Java, Black Langshan, and Dark Brahma among the breeds used during development. That is a much stronger historical basis than the old article’s reference to “Black Tangshan.”
Early birds were called Black Giants, a name tied to the Black brothers rather than only to feather color. The name Jersey Giant was later adopted.
The breed was never able to replace turkey commercially. Its biggest limitation was growth speed. Jersey Giants build a large frame first and put on more useful meat later, which made them far less efficient than modern commercial meat birds.
APA-Recognized Jersey Giant Varieties
The American Poultry Association recognizes three Jersey Giant varieties:
- Black: recognized in 1922
- White: recognized in 1947
- Blue: recognized in 2003
All three should have yellow skin, a single red comb, red wattles, clean legs, and four toes.
Black Jersey Giant
Black Jersey Giants have glossy black plumage with an attractive beetle-green sheen in good light. Shanks are black to very dark, but the bottoms of the feet should show yellow skin.
White Jersey Giant
White Jersey Giants have white plumage and willow-toned shanks with yellow soles. Their lighter feather color makes them look even larger in an open yard.
Blue Jersey Giant
Blue Jersey Giants have slate-blue plumage, often with darker lacing, and dark willow to nearly black shanks. As with many blue chicken varieties, breeding blue to blue can produce some color variation among chicks.
How Big Do Jersey Giant Chickens Get?
Jersey Giants earn their name honestly.
Standard weights are approximately:
- Cock: 13 lb
- Hen: 10 lb
- Cockerel: 11 lb
- Pullet: 8 lb
The Livestock Conservancy notes that some mature males may reach 13 to 15 pounds and females 10 to 11 pounds, with Black birds often running somewhat heavier than White birds.
What matters more than chasing the heaviest possible number is body structure. A healthy Jersey Giant should look long, deep, broad, and substantial rather than simply overweight.
Their apparent height also varies with posture and sex, so I would not treat a specific inch measurement as a requirement for every bird.
Jersey Giant Growth Rate
This is one of the most important things to understand before buying Jersey Giant chicks.
They grow a large frame first, then add more body mass later. Oklahoma State University notes that meat yield can be disappointing until birds are about six months old, while the Livestock Conservancy says many take around eight to nine months to reach a good harvestable size and body proportion.
That slow maturity is part of the breed’s charm for some homesteaders, but it is exactly why Jersey Giants do not compete with modern broilers for feed efficiency.
If you want a very fast meat bird, this is not the breed I would choose.
Egg Production
Jersey Giant hens are useful layers, but they should not be sold as commercial egg machines.
A practical expectation is around 150 to 200 eggs per year, depending on strain, age, season, nutrition, daylight, and management. The Livestock Conservancy’s breed comparison chart places good heritage lines around 175 to 185 eggs per year.
The eggs are brown and usually large to extra large. Shell shade can range from light cream-brown to darker brown.
The old article called Jersey Giant eggs “giant,” but that wording creates the wrong expectation. The eggs are large, yet they are not proportionally enormous compared with the hen’s body size.
For more productive dual-purpose options, see my guide to dual-purpose chicken breeds.
Broodiness and Hatching
Jersey Giant hens can go broody and some make attentive mothers.
The problem is simply body size. A very heavy hen can accidentally crack eggs or crush small chicks in a tight nest.
If you are breeding valuable stock, an incubator may be more predictable than relying on every broody Jersey Giant hen.
Jersey Giant eggs still follow the normal chicken incubation pattern of about 21 days. Large chick size is not a good reason to expect a routinely longer hatch.
Temperament
Temperament is one of the strongest reasons people keep Jersey Giants.
They are widely described as calm, docile, and friendly. Many adults are remarkably easygoing considering their size.
That does not mean every rooster will be gentle or every hen will enjoy being handled. Individual behavior still matters, and any large rooster deserves respectful handling around children.
In mixed flocks, Jersey Giants often get along well with other chickens. Their size can help them hold their place in the pecking order without constant fighting, but introductions should still be managed gradually.
Are Jersey Giants Safe From Hawks and Other Predators?
No chicken is predator-proof.
A very large adult Jersey Giant may be a more difficult target for some aerial predators than a bantam or young pullet, but hawks can still injure or kill chickens. Chicks and juveniles are especially vulnerable.
Foxes, raccoons, dogs, coyotes, and other ground predators can absolutely kill adult Jersey Giants.
Use secure housing, hardware cloth on vulnerable openings, and a locked coop at night. Large body size should never replace proper predator protection.
Housing and Space
Jersey Giants need more room than average backyard chickens.
For adults, around 6 square feet of indoor coop space per bird is a comfortable practical target, with more if birds spend long periods confined. An outdoor run of 15 to 25 square feet per bird is useful for these large, active foragers.
You do not need to treat those numbers as absolute rules. The real goal is enough room that birds can turn, walk, roost, feed, and move around without crowding.
Use Low, Strong Roosts
Low roosts are one of the best management changes you can make for this breed.
A 10- to 13-pound bird landing hard from a high perch puts much more force on the feet and leg joints than a smaller hen. Keep roosts low enough for easy access and use a wide, sturdy perch.
Soft, dry bedding below the roost also helps reduce hard landings.
Larger Nest Boxes
Standard small nest boxes can feel cramped. Give Jersey Giant hens enough room to enter, turn, and settle without crushing eggs against the sides.
Feeding Jersey Giants
Jersey Giants do not need routine vitamin and mineral supplementation when they are eating a complete, correctly formulated poultry ration.
Feed chicks a complete starter, growing birds an appropriate grower ration, and laying hens a balanced layer ration. If you keep roosters with hens and use an all-flock feed, provide oyster shell separately for laying hens.
Because Jersey Giants grow slowly and become very large, they can consume a lot of feed before reaching mature body weight. That poor feed-to-meat conversion is a real consideration if you are raising them for the table.
Free-ranging can provide exercise and enrichment, but forage should complement rather than replace complete feed.
Cold and Heat Tolerance
Jersey Giants generally do well in cooler climates. Their large body mass helps them tolerate cold better than many lighter breeds.
However, they have single combs, so exposed comb tissue can still develop frostbite in freezing, damp conditions. Keep winter housing dry and well ventilated.
Hot weather deserves more attention than many owners expect. A very large bird generates and retains more body heat, so provide deep shade, good airflow, and unlimited cool drinking water during summer.
Health and Leg Care
Jersey Giants can develop the same diseases and parasites as other chickens. They should not be described as a breed that “doesn’t get many illnesses.”
Their size does create some practical risks. Heavy birds can injure feet or legs after hard jumps, and any foot wound can become a starting point for bumblefoot.
Check feet regularly, keep roosts low, remove sharp objects from landing areas, maintain dry litter, and watch overweight birds carefully.
Vaccination choices depend on local disease risk, hatchery protocols, flock history, and veterinary guidance. Vaccination should not be presented as one automatic breed-specific requirement.
Are Jersey Giants Good Meat Chickens?
They can produce a lot of meat per bird, but they are not efficient meat chickens by modern commercial standards.
The breed was designed as a roasting fowl, and mature birds can make excellent large table birds. The tradeoff is time and feed.
If you value heritage growth, large mature carcasses, and slower traditional production, Jersey Giants can fit a homestead. If your main goal is fast, economical meat, a modern meat strain is much more efficient.
Are Jersey Giants Good for Beginners and Families?
Yes, with one important condition: you need enough space for them.
The breed’s calm temperament makes it easier for beginners than its size might suggest. They are also less flighty than many light breeds.
For families, the birds can be enjoyable, but very young children should still be supervised around giant hens and especially roosters. A calm 13-pound rooster is still a powerful animal.
Pros and Cons of Jersey Giant Chickens
Advantages
- Very large heritage breed.
- Calm, docile temperament.
- Useful dual-purpose bird.
- Large to extra-large brown eggs.
- Good foraging ability.
- Generally well suited to cooler climates.
Possible Drawbacks
- Slow growth and maturity.
- High feed use compared with faster-growing birds.
- Needs more coop and run space.
- Heavy birds can injure legs after high jumps.
- Large hens may accidentally break eggs when broody.
- Can struggle more in extreme heat.
Frequently Asked Questions
How big do Jersey Giant chickens get?
Standard Jersey Giant weights are about 13 pounds for mature cocks and 10 pounds for hens, with cockerels around 11 pounds and pullets around 8 pounds. Some mature birds may weigh more depending on variety and line.
How many eggs do Jersey Giant hens lay?
A practical expectation is roughly 150–200 brown eggs per year, depending on strain, age, season, daylight, nutrition, and management. Good heritage lines may fall around 175–185 eggs per year.
What color eggs do Jersey Giants lay?
Jersey Giant hens lay brown eggs, ranging from light cream-brown to darker brown. Egg size is usually large to extra large.
Are Jersey Giant chickens friendly?
They are widely known for calm, docile temperaments and many become friendly with regular handling. Individual birds and roosters can still vary, so behavior should be judged bird by bird.
Are Jersey Giants good meat birds?
They can produce a large mature carcass and were originally developed as roasting fowl, but they grow slowly and use more feed than modern commercial meat birds. They suit heritage or homestead production better than fast meat production.
Do Jersey Giant hens go broody?
Yes, some Jersey Giant hens go broody and can mother chicks, but their large body size can make them awkward setters and increase the chance of broken eggs. An incubator can be useful for valuable hatching eggs.
Are Jersey Giants cold hardy?
They generally handle cool weather well, but their single combs can still suffer frostbite in damp freezing conditions. Keep housing dry and well ventilated. Their heavy body also means they need extra shade and airflow in hot weather.
Final Thoughts
Jersey Giants are not the fastest-growing or most feed-efficient chickens, but that is not why most backyard keepers choose them.
The appeal is the combination of enormous size, calm behavior, useful brown eggs, traditional meat value, and an unmistakable presence in the flock.
If you have enough space and are comfortable waiting for a slow-growing bird to mature, the Jersey Giant can be an excellent large dual-purpose breed.
We have a NJ giant. She’s big black & beautiful. She does better in colder weather. Her feathers fall out when it’s hot & she gets picked on by the rooster. The other hens pick on her & pull her feathers out. We’ve separated her, until her feathers grow back in. She’s my favorite chicken so it pains me to see her treated so poorly by the others. Her feathers look really hard & painful. Is this normal for giants to lose their all their feathers? I’ve upped protein w/ feather fixer & mealy worms.
Hi Nicole,
Not all the chickens of this breed lose their feathers. You can see this type of molting in some specific type of strains.
Better to keep the non molted one separate from other chickens until the feather grows.
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