Furry Diary

Olive Egger

Gallus gallus domesticus

hybridShort profile

From Netherlands, United States, France, England1

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

At a glance the quick version

Weight, male3.2 kg23
Weight, female2.5 kg23
Lifespanup to 8 years31
Sizemedium

Males 6.5-8 lbs, females 4.5-6 lbs

Lays beautiful olive-green eggs
Friendly and calm temperament
Good for beginners
Dual-purpose (eggs and meat)
Hardy in hot and cold weather
31

Looks how to spot one

Feathers

Olive Eggers have a medium-sized, sturdy body covered in feathers that are typically grey and black in adults, while chicks are brown and black. Their exact appearance varies because they are a hybrid, so they may or may not have a pea comb, muffs, beard, feathered legs, or a tail.34

ColoursGreyBlackBrown (chicks)3

Personality what they are like

Olive Eggers are generally calm and friendly, though some individuals can be active. Hens may become broody and protective of their nest, which can make them a bit grumpy when you collect eggs. They get along well with most other chicken breeds, but their noise level can vary depending on their parentage.32

Daily activity how busy a day looks

Olive Eggers enjoy roaming and foraging for food on the ground. They need at least 10 square feet of run space per bird and do well if allowed to free-range in a safe area.5

Grooming and care the hands-on bits

These chickens need a clean, dry, well-ventilated coop with clean bedding. Provide 4 square feet of coop space per bird, roosting bars at least 4 feet high, and one 12x12x12 inch nesting box for every three hens. Protect them from predators with secure fencing.25

Home where they are happiest

Olive Eggers are hardy and tolerate both hot and cold temperatures. Their coop must be well-ventilated in summer and free from drafts and damp bedding in winter. They need shade in hot weather and protection from freezing water in cold weather.21

Food basics what goes in the bowl

Feed chicks a high-protein starter feed. At around 16 weeks, switch to a complete layer feed (about 18% protein). Provide calcium supplements for strong eggshells. Fresh fruits and vegetables are fine as occasional treats. Always supply clean, fresh water.15

Company who they like around

Olive Eggers are social and get along with a variety of other chicken breeds. They are not known to be aggressive, but avoid overcrowding to prevent bullying and feather pecking. They are suitable for families with children.31

The story where it all began

The Olive Egger is not a true breed but a hybrid created by crossing a blue-egg-laying chicken with a dark-brown-egg-laying chicken. This crossbreeding began around 1842 during a period known as 'hen fever', when Chinese chickens were imported and mated with local breeds in England. Farmers in the Netherlands, the United States, France and England later developed many combinations to produce a hardy bird that lays olive-green eggs. The olive colour comes from a blue egg with a brown pigment overlay. Because it is a hybrid, the American Poultry Association does not recognise it as a standard breed.354

Recognised by the official bits

American Poultry Association
Not recognised as a true breed; would be placed in the Miscellaneous Class at informal shows4

The care rhythm Furry Diary remembers it for you

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

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Owner questions the things everyone asks

How often should I feed my Olive Egger?

Feed your Olive Egger daily, providing a complete layer feed (about 18% protein) from around 16 weeks old. Always ensure they have clean, fresh water available. For exact amounts, check the food label and consult your vet.15 Furry Diary plan

What does an Olive Egger eat, and what should it never eat?

Olive Eggers eat a complete layer feed, with occasional fresh fruits and vegetables as treats. Never give them alcohol, chocolate, avocado, onions, garlic, grapes, raisins, or anything with xylitol, as these are toxic.156

How much space does an Olive Egger need?

Each Olive Egger needs at least 4 square feet of coop space and 10 square feet of run space. They enjoy roaming and foraging, so a safe free-range area is ideal.52

What shelter or housing does an Olive Egger need?

Provide a clean, dry, well-ventilated coop with roosting bars at least 4 feet high and one 12x12x12 inch nesting box for every three hens. Protect them from predators with secure fencing.25

How often should I clean an Olive Egger's home?

Furry Diary's starting plan suggests spot-cleaning the coop daily and doing a full clean every 30 days. Also check for mites every 14 days to keep them healthy. Furry Diary plan

Can an Olive Egger live with others?

Yes, Olive Eggers are social and get along well with most other chicken breeds. Avoid overcrowding to prevent bullying, and they are suitable for families with children.31

How long does an Olive Egger live?

The lifespan of an Olive Egger varies depending on care and environment. For specific information, ask a good breeder or an exotic-pet vet.

Can I handle an Olive Egger?

Olive Eggers are generally calm and friendly, making them good for handling. However, hens may become broody and protective of their nest, so approach gently during that time.32

Written from the sources on this page, a few checked guides (VCA, ASPCA, RSPCA) and Furry Diary's own starting care plan. A friendly guide, not a vet's advice.

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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 [email protected] and we will fix it.

  1. dailychickens.com: olive egger chicken dailychickens.comused for origin, lifespan years, best traits, habitat needs, diet basics, social needs
  2. cacklehatchery.com: olive egger chicken cacklehatchery.comused for weight kg, temperament, grooming or care, habitat needs
  3. tractorsupply.com: olive egger chicken breed guide tractorsupply.comused for weight kg, lifespan years, coat or body, colours, best traits, temperament, social needs, history, fun fact
  4. cacklehatchery.com: olive egger chickens 6 questions answered cacklehatchery.comused for coat or body, history, fun fact
  5. chickensandmore.com: olive egger chickens chickensandmore.comused for activity needs, grooming or care, diet basics, history
  6. ASPCA: People foods to avoid feeding your pets aspca.orgused for owner questions
  7. media.tractorsupply.com: olive egger chicken breed guide media.tractorsupply.com
  8. backyardchickens.com: olive egger.11356 backyardchickens.com
  9. flockjourney.com: all about the olive egger breed flockjourney.com
  10. VCA Animal Hospitals: Feeding times and frequency for your dog vcahospitals.comused for owner questions
  11. ASPCA: Dog grooming tips aspca.orgused for owner questions
  12. ASPCA: Cat grooming tips aspca.orgused for owner questions
  13. RSPCA: What to feed your rabbit rspca.org.ukused for owner questions

Checked 2026-10-02. Text is written in our own words from these sources.