Why is my hen laying soft-shelled eggs?
An egg gets its shell in the last hours before laying, and anything that interrupts that process can leave the shell thin, rough or missing entirely. Young hens just starting to lay and older hens commonly produce an occasional soft egg while their systems adjust or slow.
A single soft egg is rarely worth worry. A pattern across several hens or many days is a signal to look at feed, water, heat, stress and health.
Keep a simple egg log for a week or two. Note the number of eggs, any odd ones, the weather and anything unusual that happened. If soft eggs cluster on hot days or after a disturbance, you have a lead. If they are random, they are probably not worth worry.
- One egg once in a while is common
- A flock-wide pattern needs investigation
- Note the time of day and weather
Is the feed giving enough calcium?
Laying hens need a complete layer feed formulated for their needs, since shell making takes a lot of calcium. Feeding too much scratch or kitchen scraps lowers the share of the balanced ration they eat, and that can leave shells thin.
Many owners offer a separate dish of calcium in a form suited to birds, and hens usually take what they need. Ask your extension office what to offer and how, since needs vary by age and flock.
Check the feed bag too. Layer feed that is old, damp or moldy loses quality, and mixing feeds can lower the calcium share the hens receive. Store feed in a dry, sealed container, use it within the time the maker advises, and discard any that smells off or has clumped.
- Feed a complete layer ration
- Limit treats and scratch
- Offer calcium in a separate dish if advised
Do heat and stress affect shells?
Yes. Hot weather reduces feed intake and affects how birds handle calcium, so shell quality often drops in summer. Sudden noise, predators, crowding or a disturbance at night can also cause a hen to lay an egg that is not fully formed.
Provide shade, ventilation and cool, clean water in hot spells. Keep the flock calm, and secure the coop at night. Feeding in the cooler parts of the day can help intake.
Water quality matters more than people expect. Hens drink a great deal while forming eggs, and warm, dirty or frozen water cuts intake. Scrub the waterer often, set it in the shade in summer and keep it thawed in winter, since a bird that drinks less will eat less too.
- Offer cool water all day
- Keep the coop ventilated
- Reduce night disturbance
Could age or genetics be involved?
Older hens produce larger eggs with thinner shells, and some breeds are more prone to shell problems. Young pullets starting to lay may lay a few odd eggs before things settle down.
If one hen repeatedly lays soft eggs while the others do not, she may have a reproductive problem that deserves a veterinarian's attention.
Pullets just coming into lay often produce wrinkled, small or soft eggs for a short stretch. Give them a quiet, secure place to lay, keep their feed consistent and wait a few weeks before deciding there is a problem. Most settle into normal laying without any intervention.
- Watch which hen is laying them
- Track age and breed
- Mark a suspect hen if you can identify her
When might illness be behind it?
Some respiratory diseases and other infections can damage the part of the hen that forms the shell and cause thin, misshapen or pale eggs. If soft eggs come with coughing, sneezing, drops in laying, swelling or sick birds, call a veterinarian.
Do not sell or move birds from a flock that shows signs of illness, and ask your state veterinarian or extension office about reporting and testing rules, which vary by state.
- Look for breathing trouble or discharge
- Isolate sick birds
- Call your veterinarian
What about soft eggs that break in the nest?
Hens may eat broken eggs and learn the habit, so collect soft eggs quickly and clean the nest. Gather eggs at least once a day, provide enough nests with clean, dry bedding and avoid leaving broken eggs around.
Discard cracked or dirty eggs rather than eating them. Rules on selling eggs are local and vary by state, so ask your state department of agriculture before you sell.
Key takeaways
- An occasional soft egg is common, but a pattern needs a look at feed and conditions.
- A complete layer feed with limited treats supports shell quality.
- Heat and stress reduce shell quality, so provide shade, water and calm.
- Call your veterinarian if soft eggs appear with signs of illness.
Sources and further reading
Last reviewed: November 12, 2026. Written by the Homestead & Small Farm Editorial Team. See our editorial policy.