Why is my chicken not eating and has a swollen crop?
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Overview
If your chicken isn’t eating and has a swollen crop, it often means the crop isn’t emptying properly. That can happen for a few reasons, from crop slowdown to a blockage or sour crop, and it’s worth checking closely rather than waiting it out.
A full crop first thing in the morning is not normal. The crop should usually feel mostly empty after a night’s rest, so a swollen crop plus reduced appetite needs a proper look.
Things To Check
1. Check the crop first thing in the morning before your chicken has eaten or drunk anything. It should usually feel much smaller than it does in the evening.
2. Feel whether the crop is soft, firm, hard, squishy or fluid-filled. That can give a useful clue about whether it may be full of food, stuck, or fermenting.
3. Notice whether your chicken is drinking normally, drooling, or making repeated swallowing movements.
4. Look for other signs such as lethargy, fluffed-up feathers, weight loss, bad breath, vomiting-like regurgitation, or messy droppings.
5. Check whether the bird has access to long grass, bedding, string, feathers, or other materials that could be swallowed.
6. See if the crop swelling has been building up over a day or more, or if it appeared suddenly after feeding.
7. Compare the affected bird with the rest of the flock to see whether this looks like an individual problem or a wider feeding or housing issue.
Common Causes
The most common reason is crop slowdown, where the crop empties more slowly than it should. This can happen after overeating, on very dry feed, or when the bird is generally unwell.
Another common cause is impacted crop, where the crop is packed with food, grass, feathers or other material and doesn’t clear properly. The crop may feel firm or quite full.
Sour crop can also happen when the contents of the crop ferment. This can cause a swollen crop, poor appetite and an unpleasant smell from the beak.
Less commonly, the problem may be linked to an underlying illness affecting digestion or general health, which is why a persistently swollen crop shouldn’t be ignored.
What To Do
Remove food for a short period if the crop is clearly full first thing in the morning, but make sure fresh water is available. Keep the bird somewhere quiet and easy to monitor.
Check the crop again later in the day and over the next morning. If it is not getting smaller, or if your chicken is becoming quieter or weaker, arrange veterinary advice.
Offer normal, sensible feeding and avoid overloading the bird with treats or long, fibrous greens until you know the crop is emptying properly. Keep bedding, water and feed areas clean and inspect for anything the bird may have swallowed.
If more than one bird is affected, review the whole flock’s feed, access to forage and housing conditions. That can help you spot a shared management issue early.
When To Contact A Vet
Speak to your vet promptly if the crop is still swollen the next morning, feels hard or very fluid-filled, smells foul, or your chicken is not eating at all. Get help sooner if the bird seems weak, is losing condition, or you suspect a blockage.
Products That May Help
Keeping feed, water and the coop area clean can support good day-to-day flock management while you monitor the bird’s appetite and crop size.
Related Questions
Why does my chicken’s crop stay full overnight?
What does sour crop smell like?
When should a chicken with a swollen crop see a vet?
Atlas is here to support owners with practical, easy-to-understand guidance. It is not a substitute for professional veterinary advice. If you're concerned about your animal's health, symptoms worsen, or something doesn't feel right, contact your vet.