What Foods Are Toxic To Chickens?

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“I’m starting a small backyard chicken coop, and I’m worried about accidentally feeding my hens something harmful. What foods should I avoid giving to chickens?” Thanks so much, Sarah, from Portland, Oregon, USA.

What Foods Are Toxic To Chickens? A Comprehensive Guide for Backyard Flock Owners

Hey Sarah! Congratulations on starting your backyard chicken coop in Portland. It’s fantastic that you’re being proactive about your hens’ health. You’re right to be cautious about what you feed them, as some common foods can indeed be toxic to chickens. Let’s explore this topic in detail to ensure your feathered friends stay happy and healthy.

The Importance of a Safe Diet for Chickens

Chickens are omnivores and generally have robust digestive systems, but they’re not invincible. Feeding them the wrong foods can lead to serious health issues, reduced egg production, and in severe cases, even death. As a responsible chicken keeper, it’s crucial to understand what’s safe and what’s not.

Common Foods That Are Toxic to Chickens

Let’s start by looking at some of the most common foods that you should never feed your chickens:

  1. Avocado: All parts of the avocado plant contain persin, which is toxic to chickens. It can cause respiratory distress, heart damage, and even sudden death.
  2. Green Potato Skins and Green Tomatoes: These contain solanine, which can cause gastrointestinal and neurological problems in chickens.
  3. Chocolate: Just like dogs, chickens can’t process theobromine found in chocolate. It can cause heart problems and seizures.
  4. Raw or Dried Beans: Uncooked beans contain hemagglutinin, which is toxic to chickens. Always cook beans thoroughly before feeding them to your flock.
  5. Moldy or Spoiled Foods: These can contain mycotoxins that are harmful to chickens.

Sarah, it’s important to note that while these foods are definitely off-limits, there are many other foods that should be given only in moderation or with caution. Let’s dive deeper into those categories.

Foods to Feed with Caution

Some foods aren’t necessarily toxic but should be given sparingly or with certain precautions:

  • Citrus Fruits: While not toxic, large amounts can interfere with calcium absorption and affect egg production.
  • Onions and Garlic: These can flavor eggs and, in large quantities, may cause anemia.
  • Apple Seeds and Fruit Pits: These contain small amounts of cyanide. While a few won’t harm chickens, it’s best to remove them.
  • Raw Meat: Can promote cannibalism in chickens. If you must feed meat, ensure it’s cooked thoroughly.
  • Salty Foods: Excessive salt can lead to dehydration and other health issues.

The Dangers of Toxic Plants

Sarah, as you’re setting up your coop in Portland, it’s crucial to be aware of potentially toxic plants in your yard. Chickens are curious creatures and may peck at various plants. Some common toxic plants include:

  • Foxglove
  • Nightshade
  • Jimsonweed
  • Yew
  • Rhododendron
  • Azalea
  • Oleander

Consider removing these plants from areas accessible to your chickens or fencing off potentially dangerous areas.

The Impact of Processed Human Foods

While it might be tempting to share your snacks with your feathered friends, many processed human foods are unsuitable for chickens:

  • Sugary Foods: Can lead to obesity and other health issues in chickens.
  • Caffeine: Found in coffee, tea, and some sodas, caffeine can be harmful to chickens’ cardiovascular systems.
  • Alcohol: This should go without saying, but alcohol is toxic to chickens and should never be given to them.

Understanding Chicken Nutrition

To better understand why certain foods are harmful, it’s helpful to know what chickens actually need in their diet. A balanced chicken diet typically consists of:

  • Grains (for energy)
  • Proteins (for growth and egg production)
  • Vitamins and minerals (for overall health)
  • Grit (to help with digestion)
  • Fresh water (always available)

Commercial chicken feed is formulated to meet these needs, which is why it should make up the majority of your chickens’ diet, Sarah.

Safe Treats for Chickens

Now that we’ve covered what not to feed, let’s look at some safe treats you can offer your chickens:

  • Leafy greens (lettuce, kale, spinach)
  • Berries (strawberries, blueberries, raspberries)
  • Cooked eggs (yes, chickens can eat eggs!)
  • Mealworms (a favorite among many chickens)
  • Cooked vegetables (carrots, peas, corn)
  • Grains (oats, wheat, corn)

Remember, Sarah, treats should only make up about 10% of your chickens’ diet. The bulk should still come from a balanced chicken feed.

Signs of Food Poisoning in Chickens

Despite our best efforts, accidents can happen. It’s important to recognize the signs of food poisoning in chickens:

  • Lethargy or depression
  • Loss of appetite
  • Diarrhea
  • Crop impaction
  • Neurological symptoms (stumbling, head tilt)
  • Sudden death

If you notice any of these symptoms, isolate the affected chicken and consult a veterinarian immediately.

The Importance of Clean Food and Water

Sarah, as you set up your coop, remember that how you provide food and water is just as important as what you provide. Always ensure that:

  • Feeders and waterers are cleaned regularly
  • Fresh water is available at all times
  • Food is stored in rodent-proof containers
  • Moldy or wet feed is discarded immediately

Seasonal Considerations

In Portland, you’ll experience distinct seasons, which can affect what’s available and safe for your chickens:

  • Spring: Be cautious of new growth in your yard that might be toxic.
  • Summer: Ensure plenty of fresh water and cool treats like frozen berries.
  • Fall: Pumpkin seeds can be a great treat and natural dewormer.
  • Winter: Warm oatmeal can be a comforting treat on cold mornings.

The Role of Foraging

Chickens naturally love to forage, and it’s a great way for them to supplement their diet. However, it’s important to ensure their foraging area is safe. Remove any potentially toxic plants and be aware of any pesticides or herbicides used in the area.

Educating Family Members

Sarah, it’s crucial to educate everyone in your household about what chickens can and can’t eat. Children, in particular, might be tempted to feed chickens scraps or treats without realizing the potential harm. Consider creating a simple list of “chicken-safe” foods to post near the coop.

Final Thoughts…

Sarah, starting a backyard chicken coop is an exciting adventure, and your concern for your hens’ well-being is commendable. Remember, the key to a healthy flock is a balanced diet primarily consisting of quality chicken feed, supplemented with safe treats in moderation. Always err on the side of caution when introducing new foods, and don’t hesitate to consult with a local veterinarian or experienced chicken keeper if you have doubts.

Your chickens in Portland are lucky to have such a caring owner. Keep up the great work, and enjoy the fresh eggs and delightful company your feathered friends will provide. If you have any more questions as you embark on this journey, don’t hesitate to reach out. Happy chicken keeping!


Whether you're a complete beginner and don't know where to start, or you're a seasoned chicken keeping professional and just want practical "how to" advice on tap our guide to keeping chickens has got you covered...

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