17+ Most Aggressive Chicken Breeds In The World! 

Chickens, typically considered gentle farm creatures, actually showcase diverse temperaments. Some may display aggression, though it’s not negative. Effective handling and specific care are essential for their well-being.

In my research, I found 17 of the Most Aggressive Chicken Breeds. We’ll explore their behavior and unravel the reasons behind their assertiveness. Plus, the tips for handling these lively fowls will be there to help you choose your breed.

Let’s check the article to know how they express aggression. You’ll also discover effective ways to manage their spirited behavior.

List of 17 Most Aggressive Chicken Breeds

While some breeds charm with their gentle cooing and fluffy feathers, some may be noticeably dangerous. Here is a list of my 17 picks of aggressive chickens!

1. Jersey Giant Breed

Jersey Giants, known for their large size, originated in the United States in the late 1800s. Jersey Giants are usually calm and gentle, but there are times when they might show a bit of aggression. Let’s explore why.

Like people need personal space, Jersey Giants do, too. When their coop gets too crowded, they feel stressed and get a bit grumpy. It’s when they are competing for food.

Jerseys care about their food. If another chicken comes too close to their mealworms or scratches, they give a little peck or chase.

Jerseys can get scared by sudden movements or unfamiliar situations. If someone reaches into their coop, they peck or flap their wings to protect themselves. It’s a bit like being surprised by a loud noise in the dark – a natural reaction!

Note: Both roosters and hens can be protective, but roosters are usually more territorial. They chase other roosters or peck hens to keep their ladies safe.

Take a look at the video of such a beautiful yet aggressive backyard chicken.

2. Rhode Island Red

Originating in the United States, Rhode Island Reds are popular backyard birds valued for their prolific egg-laying capabilities. The Rhode Island Reds are vibrant chickens with a touch of attitude!

These backyard favorites are famous for laying fantastic eggs. But they are also known for being a bit bossy, especially the roosters.

Here’s what you need to know about these sassy birds:

Rhode Island Red hens like to be in charge. They might push around smaller or younger chickens.

The roosters are a bit territorial. They consider their coop and yard their kingdom. So, they chase or peck other roosters daring to enter.

Rhode Island hens are fierce when it comes to their chicks. They’ll peck or chase anything they see as a threat. Also, if it’s your hand reaching for their baby chicks!

Like many chickens, this breed can be food-aggressive. If another chicken tries to snatch their tasty treat, they give a quick peck. 

Note: They try to chase to claim their rightful share.

Here is a video about them.

3. Cubalaya Breed

Hailing from Cuba, Cubalayas are spirited and small-bred for their feisty personalities and striking appearance. It’s crucial to approach their assertiveness with understanding and proper care.

Here’s why Cubalayas can be assertive.

If you observe them, these little chickens fiercely protect their flock and territory. They are always ready to take action against perceived threats.

Cubalayas value their independence. Confined spaces or restrictions on their movement can stress them. It also leads to aggression.

Their sharp instincts and curiosity may lead them into trouble. They might dart out or peck at unfamiliar objects.

Note: So, you may see them as fierce protectors with aggression!

Learn more about them by watching the video.

4. Malay Chickens

Malays, originating in Asia, are celebrated for their majestic appearance and athletic prowess. They are historically used in cockfighting.

Just like any breed, the temperament of Malay chickens varies. Some are naturally calm, while others may be alert or territorial.

Early socialization is key, especially for breeds with a reputation for independence.

Malay chickens can react negatively to crowded spaces. Besides, the lack of exercise, loud noises, or unfamiliar people is a problem. Now, what can you do to calm the Malay chicken breed?

Providing ample space, enrichment, and a predictable routine helps minimize stress-induced aggression.

Malays aren’t known for human aggression. Their alertness and protective nature might be misconstrued.

Note: Genetics, upbringing, and experiences shape their personalities.

5. Aseel or Asil Chicken Breed

Originating in India, Aseel is a breed known for being assertive and aggressive. Let’s understand their fierceness.

Aseels were bred for centuries to fight and are considered to have martial qualities. This is what gives them a strong instinct to protect their territory. They might see other chickens or even humans as potential rivals.

Such breeds have natural sharp spurs and a strong beak. They use these parts to defend themselves or attack if they feel threatened.

Note: Owning Aseels is restricted or prohibited in some places. They need owners who are experienced and can keep them properly.

6. Yokohama Chicken

Yokohama, with their long tails, originated in Japan. These chickens can indeed show territorial and assertive behavior.

These feathered royalty are serious about their space. The roosters might chase or peck others entering their territory. However, the hens stand their ground at the nest box.

They are the breed who look for freedom! Confined spaces or restrictions can cause stress. And it may lead to pecking or chasing.

Like many chickens, they follow the natural pecking order. They show dominance through chases or pecks to maintain their flock’s position.

Note: Another freedom-taker chicken breed who chases or pecks.

7. Phoenix Chickens Breed

Developed in Japan, Phoenix chickens are admired for their long, elegant tails. They are also known for their varied color patterns.

Phoenix chickens have diverse temperaments. So, it’s not accurate to label the entire breed as naturally aggressive. Here’s a more detailed view.

Phoenix chickens are generally known for being alert, curious, and intelligent. They are often quite active and enjoy exploring their surroundings.

Proper socialization is crucial for Phoenix chickens, just like any other breed. Early and consistent interaction with humans helps shape their behavior. It also makes them friendly and well-adjusted birds.

Each Phoenix chicken has a unique personality, much like people. Some may be outgoing and confident, while others may be reserved or cautious.

Note: Observing individual behavior and providing appropriate care is essential. 

8. Old English Game Breed

Originating in England, Old English Game chickens have a spirited demeanor. They are also historically bred for cockfighting. The Old English Game chicken breed is recognized for its lively and spirited nature.

But a lot of poultry experts consider them as “aggressive.” Here are the reasons behind this.

Game chickens possess robust survival instincts. So, you see them displaying territorial behavior.

This territoriality doesn’t necessarily extend to aggression toward humans. Within the Old English Game breed, individual personalities exhibit significant variation.

Note: A positive temperament includes proper socialization, attentive handling, and providing sufficient space.

9. O-Shamo Breed

Originating in Japan, O-Shamos are appreciated for their majestic appearance and athleticism. Every breed can have individuals with various temperaments. So, O-Shamo is no exception!

While their history involves competitive fighting, it doesn’t properly define O-Shamos. Today, they are esteemed for their striking appearance and remarkable athleticism.

Note: if you ask, which rooster is best for fighting? Shamo chicken breed will come as the best fighter rooster breed.

10. Gamefowl Chicken Breed

According to most authorities, cockfighting originated in southeast Asia. Gamefowl, known for assertiveness and occasional aggression, were bred for cockfighting. They are prone to territorial behavior, especially in roosters.

The aggression may come especially during the breeding season. Their breeding background can make actions like loud crowing seem aggressive towards humans.

Actually, individual Gamefowl temperaments vary. With proper handling and responsible ownership, you can lessen the aggression.

Note: Some Gamefowls may develop friendly bonds with caretakers.

11. Saipan Chicken

Saipan, originating from the Mariana Islands, is compact but fiercely protective. Saipan chickens from sunny islands are small but strong. Their fluffy feathers make them cute, but they’re also protective. So, you see them as aggressive or dangerous sometimes.

They fiercely protect their coop and food. They might chase or peck other chickens to defend their territory. It’s especially for their favorite mealworms or scratch.

Saipans value independence. Being stuck in small spaces can make them stressed and sometimes aggressive.

These chickens are always alert for potential threats. Sudden movements or unfamiliar faces can trigger their protective instincts.

Note: They peck or chase until they feel safe.

12. Easter Egger Breed

Easter Egger chickens, originating in the United States, are popular for their colorful eggs and friendly, social personalities. However, here are the facts you must hear about their temperament.

Chickens are naturally social and protective. Behaviors like guarding chicks or territory might be mistaken for aggression.

Identifying what makes an Easter Egger feel threatened helps avoid defensive behavior. Triggers include –

• Unfamiliar people
• New environments
• Handling during brooding
• Competition for resources.

13. Cornish Chicken

The breed that developed into the Cornish was called “Indian Game” in Cornwall, England’s shire (county). Cornish chickens are a vibrant breed with some unexpected traits, including occasional aggression. This can be more noticeable in roosters vying for dominance.

If they sense competition for food, they might peck or chase other chickens from the feeding area. Cornish roosters can be assertive, chasing or pecking at other roosters in their territory.

In some instances, they may even challenge humans they perceive as threats. 

Note: It’s important to be aware of and manage their territorial instincts for a harmonious environment.

14. Andalusian Chicken Breed

Originating in Spain, Andalusians are known for their elegant appearance and strong flock instincts. Andalusians also have strong survival instincts that may make them territorial. It is visible, especially over hens and chicks.

Certain situations may make an Andalusian feel threatened, leading to defensive behavior. These situations include introducing new people or environments, which can cause stress.

When taking care of baby chicks, mother chickens do peck or hiss. Also, if there’s not enough space or food for all the chickens, they might argue.

Note: Not the most aggressive but become serious when they lack their needs in the yard.

15. Leghorn Chicken Breed

Originating in Italy, Leghorn chickens are prolific egg layers. So, you see them less aggressive or not aggressive at all. And don’t avoid them as the harsh and cruel breed.

They are actually docile, but some situations may push them to act dangerously rarely. Here are the facts –

• Chickens are often full of energy and curiosity. Which looks like nervousness or aggression.
• Young hens can get protective of their nesting spots when they start laying eggs.
• They might suddenly flap or dart. And it might seem like they’re being aggressive.

Note: Angry and aggressive but not harmful every time. So, keep them as a pet or for your poultry purpose.

16. Barred Plymouth Rock Breed

Developed in the United States, the Barred Plymouth Rock (BPR) is widely known for its gentle nature. However, aggression can arise based on a few factors.

Each BPR has a unique personality. It can be naturally more assertive or territorial than others.

Chickens raised in cramped or stressful conditions may be more prone to aggression. Preventing this behavior involves proper handling, socialization, and ensuring they have enough space.

BPR hens can become protective and aggressive. They show the behavior if they feel threatened by predators, humans, or other animals. Roosters might also show aggression towards other roosters or unfamiliar birds.

Note: They are called protective rather than aggressive chicken breeds.

17. New Hampshire Red Chicken

Originating in the United States, New Hampshire Reds are valued for their friendly demeanor. They are gentle but show sudden aggressiveness. Although they are known as docile by the chicken owners, check these factors –

• Broodiness: When hens become broody, they become protective of their eggs and chicks. This protective behavior results in pecking or attacking anyone.
• Food Requirement: This breed becomes aggressive when guarding their food, water, or spaces. This behavior is a natural response to ensure access to necessities.
• Lack of Space or Food: Insufficient space or stress can amplify aggression as well. Providing adequate space and a stress-free environment is essential.
• Genetics Matters: New Hampshire Reds chickens are generally not naturally aggressive. However, some of them might have genes that make them more likely to act dominant or territorial.

Now, let’s share the behavior they show when get threatened or disturbed by the facts –

• Chasing and pecking are common in establishing dominance or defending resources. This is the most prevalent form of aggression observed in these chickens.
• More serious than chasing, feather pulling can lead to injuries and bald patches. It’s often motivated by boredom or stress.
• Roosters may use spurs to fight or attack. While rare in hens, it can occur with particularly dominant individuals.
• Chickens can make loud noises like squawking, clucking, or hissing when they feel threatened. This is another way they show they’re trying to protect themselves.

Note: They can be both docile and aggressive!

7 Least Aggressive Chicken Breeds

Not all the chickens are highly aggressive. Some of them are less aggressive and it’s their natural behavior. Let’s talk about them –

1. Brahma Chicken Breed

Originating in the United States, Brahmas are gentle giants valued for their calm nature and large size. Brahma chickens are known for being gentle and calm, not typically aggressive to humans or other chickens. But if you see them, they do it to save themselves!

Actually, they’re nicknamed “gentle giants” due to their peaceful nature and large size.

But why are they on the list of aggressive chickens? It’s because of the natural aggressiveness they show. So, you can consider them the least aggressive poultry.

2. Sumatra Chicken

Hailing from Sumatra, these chickens are recognized for their unique appearance and vibrant plumage.

The temperament of Sumatra chickens can vary based on factors. For example, age, gender, and individual personality. Let’s see why they are called the aggressive flock of chickens.

Sumatras are energetic and watchful, always on the lookout for potential threats. The roosters can be territorial during the breeding season. But they are generally not considered aggressive towards humans.

During mating season, roosters naturally protect their hens and chicks. So, they show behaviors like strutting, crowing, and chasing intruders.

Note: Proper socialization and handling from a young age can help. It will make the Sumatra roosters become friendly and docile around humans.

On the other hand, hens are attentive and protective mothers. They go broody and sit on their eggs until hatching.

Some Sumatra hens may be skittish and startled if not regularly handled. It’s when you see reflecting their natural alertness and wild instincts.

Sumatra hens are usually calm and docile. They enjoy foraging and exploring without displaying aggressive behavior.

3. Sicilian Buttercup Chicken

Sicilian Buttercups from Italy are recognized for their distinct buttercup-shaped comb. This breed is known for its vibrant personalities and energetic nature. But you cannot exactly say they are aggressive and dangerous.

At least they aren’t considered an aggressive breed towards humans. But a little aggressiveness pushed them on the list!

But there are some potential assertive acts in them. Here are the facts I discovered –

Buttercups are not the calmest or quietest breed. They can be vocal and active and sometimes become territorial over space or food. This isn’t necessarily aggression but a natural act.

Some individual birds, regardless of breed, may naturally be more reserved or prone to defensiveness. Understanding your specific chickens’ personalities and respecting their boundaries is key.

In the breeding season, roosters from any breed may act more territorial and dominant. They chase crows loudly or try to peck. However,  they usually do this to other roosters, not to people.

4. Ancona Chicken

Originating in Italy, Anconas are known for their spotted plumage and lively personalities. Anconas are generally not considered an aggressive breed of chicken.

In fact, they’re often praised for being friendly and curious around humans. But we blame them as an aggressive breed.

However, call them the least aggressive chickens, as natural aggression is always there in chickens. No problem with that!

5. Sebright Chicken

Coming from England, Sebrights are petite and boast lustrous plumage, known for their elegant appearance. Sebright chickens are generally not known for being aggressive. 

They are a small and ornamental breed with a friendly and docile temperament. However, as with any breed, individual variations in behavior can occur. So, a little aggressiveness is normal!

6. Welsummer Breed

Welsummers, from the Netherlands, are admired for their large, dark brown eggs and friendly temperament. So they don’t show inherently aggressive behavior. However, some of them may display seriousness when they get into a threat.

So, consider them less aggressive birds in your yard!

7. Sussex Chicken Breed

Sussex chickens are known for being very friendly and calm. So, they’re on the list of least aggressive due to their natural aggressive behavior.

They’re a great choice for families and backyard flocks because of their easygoing nature. These chickens are gentle and easy to handle, making them suitable for families with children. Their relaxed attitude helps create a peaceful environment in the flock.

Sussex chickens also get along well with other chicken breeds, creating a friendly and cooperative atmosphere. This makes them a top choice for people who want a sociable and pleasant addition to their backyard or farm.

Goods and Bads About Raising the Most Aggressive Chicken Breeds

While not for everyone, raising these feathered firecrackers can be an enriching experience. I think the Pros and Cons of Fiery Flockmates can help you here.

Aspect	Pros	Cons
Protection	These breeds fiercely defend their flock. Also, deters predators and keeps other chickens safe.	Unpredictable aggression can pose a risk to humans. It’s especially children and other animals.
Athleticism and Entertainment	Witnessing their agility, natural behaviors, and spirited displays can be captivating.	Increased space and enrichment are needed. It’s to prevent boredom and potential aggression outbursts.
Challenge and Reward	Successfully taming and socializing these birds can be immensely rewarding.	Potential for serious injuries as aggressive roosters can inflict harm.

How to Lessen the Aggressiveness in Chickens? 10 Tips to Follow!

Here are some tips to keep your chicken breeds in control without aggressiveness.

1. Make sure chickens have enough room to move freely so they don’t argue over territory.
2. Allow chickens to spend time together often to get along better and have a peaceful order.
3. Put out different spots for food and water so chickens don’t fight over them.
4. Don’t put too many chickens in one place, and make sure they have a quiet home to stop them from getting upset and mean.
5. Hold baby chickens a lot when they’re little so they grow up friendly and easy to take care of.
6. When making new chickens, pick ones that are calm and not mean.
7. Give chickens toys and fun things to do so they’re not bored and won’t be mean to each other.
8. Look at chickens often to make sure they’re healthy and fix any problems that make them act mean.
9. If one chicken is too mean, keep it away for a little while so it can’t hurt the others.
10. Give them treats when they’re behaving nicely. This makes them happy and friendly.

Recommended Readings:

• 19 Best Rooster Breeds
• Fancy Feather Foot Chicken Breeds

FAQs

Here are some other queries to feed your curious mind. Check them out!

Bottom Line

So, you checked out the 17 most aggressive chicken breeds, where Aseel is the most popular rooster. Although the majority of them remain docile and calm, the situation makes them aggressive. Especially, disturbance in their breeding, feeding, or roosting time makes them dangerous. So, they peck or attack the potential predators.

Actually, they have different temperaments based on environmental factors. You may even see the docile one acting aggressively. Therefore, provide them with enough facilities and care to make them friendly from a young age.