Egg binding happens when a hen can’t pass an egg. It’s painful and can become life-threatening within a day or two if the egg doesn’t come out. Knowing the signs and how to help can save your hen. Here’s what to know about egg binding in hens.
Quick Answer: An egg-bound hen may strain, sit fluffed up, walk like a penguin, pump her tail, refuse food and spend long periods in the nest box without laying. Gently feel for an egg near the vent. Bring her inside, give a warm soak and keep her calm. If she doesn’t pass the egg within a few hours, or seems weak, call a vet right away.
What Is Egg Binding?
An egg normally travels through the oviduct and is laid within about 24 to 26 hours of starting to form. In egg binding, the egg gets stuck, often near the vent. The hen may also struggle to pass droppings.
The Poultry Extension describes egg binding as a condition that needs prompt attention.
Causes
| Cause | Why it matters |
|---|---|
| Calcium deficiency | Weak muscle contractions; soft-shelled eggs |
| Oversized or double-yolk eggs | Too large to pass |
| Young pullets just starting to lay | Reproductive tract still maturing |
| Older hens | Weaker muscles |
| Obesity | Fat around the reproductive tract |
| Dehydration | Less lubrication |
| Stress or cold weather | Interferes with laying |
| Infection or tumors | Inflammation or blockage |
Signs of Egg Binding
- Straining or pumping the tail
- Sitting in the nest box for hours without laying
- Walking upright like a penguin
- Fluffed feathers and lethargy
- Not eating or drinking
- Pale comb
- Swollen or hard abdomen
- Watery droppings or no droppings
- A visible or palpable egg near the vent
What to Do Right Away
1. Bring her inside
Place her in a quiet, warm area like a dog crate in a calm room.
2. Gently check for an egg
Wearing gloves, feel gently around the vent and lower belly for a hard egg. Don’t press hard.
3. Give a warm soak
- Fill a tub with warm water about 100°F (38°C), deep enough to cover her vent and lower belly.
- Let her soak for 15 to 20 minutes, supporting her.
- Some keepers add Epsom salt to help relax muscles.
- Dry her well with a towel and hair dryer on a low setting.
4. Provide steam and quiet
Place her in a warm, humid area, like a bathroom with a warm shower running, keeping her safe from water and heat. Then let her rest in a dark, quiet crate.
5. Offer calcium if she can swallow
Some keepers give a calcium supplement by mouth, such as calcium gluconate or a crushed calcium tablet in water. Ask your vet about the right product and dose first.
6. Lubricate the vent
Gently apply a lubricant like petroleum jelly around the vent.
Never try to pull or break the egg yourself. Broken shell can cut the oviduct and cause deadly infection. If the egg doesn’t come out, a vet should handle it.
When to Call a Vet
Call a vet right away if:
- She hasn’t passed the egg after a few hours of home care
- She’s weak, lethargic or can’t stand
- You see a broken egg or prolapse (tissue protruding from the vent)
- She’s breathing hard or seems in severe pain
A vet may give injectable calcium, medication to help the oviduct contract, or carefully remove the egg.
Prevention
- Feed a complete layer feed with free-choice oyster shell. See what to feed backyard chickens.
- Limit treats so hens eat enough balanced feed.
- Keep hens at a healthy weight.
- Provide clean water at all times.
- Reduce stress in the coop. See chicken coop essentials.
- Don’t rush young pullets into laying with extra light.
Related Conditions
- Vent prolapse: part of the oviduct pushes out of the vent. Needs prompt care.
- Internal laying: eggs released into the abdomen. Causes swelling and illness.
- Soft-shelled eggs: a sign of low calcium.
Frequently Asked Questions
How long can a hen survive egg bound?
Without help, a hen may die within about 48 hours. Act early.
Can roosters cause egg binding?
No. Egg binding is related to the hen’s health, diet and age, not the rooster.
Is egg binding contagious?
No.
Can a hen lay normally after being egg bound?
Many recover and lay normally. Some hens have repeated problems and may need vet care to stop laying.
Is it egg binding or broodiness?
Broody hens sit calmly and may growl when disturbed, but they eat, drink and leave the nest briefly. Egg-bound hens strain, seem uncomfortable and look unwell.
Can I prevent egg binding with supplements?
Free-choice oyster shell and a balanced layer feed are usually enough. Extra supplements should be used only as your vet advises.
Are certain breeds more at risk?
High-production breeds that lay many eggs a year can be more prone to reproductive problems over time.
This article is for general information only and isn’t a substitute for professional veterinary advice. If you’re worried about your pet’s health, contact your veterinarian or an emergency animal hospital.
