Finding a soft, rubbery, or shell-less egg in your coop can be alarming—especially if you’re new to backyard chickens. Soft eggs (also called soft-shelled eggs or shell-less eggs) are fairly common, particularly in young or stressed hens. The good news: most causes are identifiable and fixable.
This in-depth guide explains why chickens lay soft shell eggs, how to diagnose the cause, and the best ways to fix and prevent the problem.
What Is a Soft Egg?
A normal egg has:
- A hard calcium shell
- Inner membranes
- Egg white (albumen)
- Yolk
A soft egg lacks a fully formed shell. It may feel:
- Rubbery
- Thin and fragile
- Completely shell-less (just a membrane)
Usual Egg Textures (Shell Qualities)
- Smooth & Rigid: The standard, healthy eggshell texture.
- Slightly Matte/Bloom: Fresh eggs have a thin, protective coating (the “bloom”) that makes them feel slightly matte or powdery, rather than glossy.
Unusual Egg Textures (Shell Abnormalities)
- Calcium Deposits/Pimpled Eggs: Rough, raised bumps that feel like sand or small rocks. These are caused by excess calcium or a malfunction in the shell gland, often producing a “sandy” texture.
- Wrinkled/Corrugated Eggs: The shell appears wrinkled like a raisin or has longitudinal ridges, often caused by stress, illness (e.g., bronchitis), or a tired shell gland in older hens.
- Soft-Shelled/Rubbery Eggs: Eggs laid without a fully hardened shell, often having a thin, rubbery membrane. These are common in young, inexperienced hens or due to a lack of calcium or vitamin D.
- Misshapen Eggs: Irregular shapes, such as overly pointy, “slab-sided” (flat-sided), or extremely long eggs.
- Fairy/Fart Eggs: Tiny eggs, often with no yolk, which can have an unusually thin or, conversely, a very tough texture.
- Lash Eggs: Not truly an egg, but a hard or rubbery mass of tissue passed by the hen, often indicating a severe infection.
So, Why Do Chickens Lay Soft Eggs?
There isn’t a single cause. Soft eggs usually result from nutrition, health, age, or environmental issues. Let’s break down the most common reasons.
1. Calcium Deficiency (Most Common Cause)
Why It Happens
Eggshells are made primarily of calcium carbonate. If a hen doesn’t get enough calcium, her body cannot produce a hard shell.
Signs
- Thin or soft shells
- Misshapen eggs
- Reduced egg production
Fix
- Provide oyster shells or crushed eggshells free-choice
- Use high-quality layer feed (16–18% protein)
- Avoid feeding only grains or kitchen scraps
2. Vitamin D Deficiency
Why It Matters
Vitamin D helps chickens absorb calcium. Without it, even a calcium-rich diet won’t help.
Causes
- Lack of sunlight
- Poor-quality feed
Fix
- Ensure sunlight exposure (6–8 hours daily)
- Use fortified poultry feed
- Consider supplements if needed
3. Young Hens (Pullet Phase)
Why It Happens
New layers (pullets) are still developing their egg-laying system.
What to Expect
- Soft eggs
- Odd shapes
- Small eggs
Fix
- No action needed
- Eggs usually normalize within 2–4 weeks
4. Stress
Triggers
- Predator attacks or threats
- Loud noises
- Extreme heat or cold
- Overcrowding
Effects
Stress disrupts the hen’s reproductive cycle, leading to incomplete shell formation.
Fix
- Keep coop calm and secure
- Provide adequate space (4 sq ft per bird minimum)
- Maintain consistent routines
5. Heat Stress
Why It Matters
High temperatures reduce:
- Feed intake
- Calcium absorption
Signs
- Panting
- Reduced egg production
- Thin or soft shells
Fix
- Provide shade and ventilation
- Add electrolytes to water
- Ensure constant access to fresh, cool water
6. Poor Diet or Imbalanced Nutrition
Problem
Feeding too many treats or scraps dilutes essential nutrients.
Fix
- Stick to balanced commercial layer feed
- Limit treats to <10% of diet
7. Illness or Disease
Certain diseases can cause soft eggs, including:
- Infectious Bronchitis
- Egg Drop Syndrome
- Newcastle Disease
Signs to Watch
- Lethargy
- Drop in egg production
- Respiratory symptoms
Fix
- Isolate affected birds
- Consult a veterinarian
8. Aging Hens
Why It Happens
Older hens naturally produce:
- Thinner shells
- More irregular eggs
Fix
- Increase calcium intake
- Accept natural decline in egg quality
9. Obesity or Overfeeding
Overweight chickens may have:
- Reproductive issues
- Poor egg formation
Fix
- Reduce high-calorie treats
- Encourage movement
10. Lack of Clean Water
Water is essential for:
- Nutrient absorption
- Egg formation
Fix
- Provide fresh water daily
- Clean waterers regularly
How to Fix Soft Eggs Quickly
If you notice soft eggs, take these steps immediately:
Add Calcium
- Oyster shells (best option)
- Crushed eggshells
Improve Feed Quality
- Switch to layer feed
- Avoid low-protein diets
Check Environment
- Reduce stress
- Improve coop conditions
Ensure Sunlight
- At least 6 hours/day
Monitor Flock Health
- Watch for signs of illness
How Long Does It Take to Fix the Problem?
- Nutritional issues: 1–2 weeks
- Young hens: 2–4 weeks
- Stress-related: depends on conditions
Consistency is key.
Are Soft Eggs Safe to Eat?
Yes—but with caution:
- If clean and fresh → safe to cook
- If dirty or broken → discard
Always cook thoroughly.
Can Soft Eggs Harm Chickens?
Yes, frequent soft eggs can lead to:
- Egg binding
- Internal laying issues
- Weak overall health
That’s why it’s important to fix the cause early.
Prevention Tips
1. Provide Balanced Nutrition
- High-quality layer feed
- Calcium supplements
2. Maintain Clean Coop
- Dry bedding
- Proper ventilation
3. Reduce Stress
- Protect from predators
- Avoid overcrowding
4. Ensure Sunlight
- Outdoor access daily
5. Monitor Regularly
- Check eggs daily
- Watch for changes
When to Worry
Contact a vet if:
- Soft eggs persist beyond 2–3 weeks
- Multiple hens are affected
- You see signs of illness
FAQs
1. Why is my chicken laying soft eggs suddenly?
Usually due to calcium deficiency, stress, or heat.
2. Can soft eggs be eaten?
Yes, if fresh and clean, but always cook them thoroughly.
3. How do I give calcium to chickens?
Provide oyster shells or crushed eggshells.
4. How long do soft eggs last?
They spoil faster—use immediately or discard.
5. Do soft eggs mean my chicken is sick?
Not always—often it’s just diet or age-related.
6. Can heat cause soft eggs?
Yes, heat stress reduces calcium absorption.
7. Will young chickens lay soft eggs?
Yes, it’s common in the first few weeks.
8. How can I prevent soft eggs?
Balanced diet, calcium, sunlight, and low stress.
9. Can lack of water cause soft eggs?
Yes, dehydration affects egg formation.
10. When should I call a vet?
If the issue lasts more than 2–3 weeks or spreads.
Final Thoughts
Soft eggs are a common but manageable issue in backyard flocks. In most cases, the solution is simple:
- Improve nutrition
- Add calcium
- Reduce stress
With proper care, your chickens will quickly return to laying strong, healthy eggs
Reference Links
Here are trusted sources for further reading:
- University of Florida IFAS – Eggshell Quality
https://edis.ifas.ufl.edu/publication/PS029 - RSPCA – Laying Hens Health
https://www.rspca.org.uk/adviceandwelfare/farm/layinghens