Why is my hen eating but losing weight? | arlo.® Atlas
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Overview
If your hen is eating but losing weight, it usually means she’s not getting enough from her feed, or something is making it harder for her to digest or use her food properly. Common causes include worms, crop problems, bullying at the feeder, stress, and other health issues. It’s worth checking her closely, because weight loss can build up quietly even when appetite still looks normal.
Things To Check
1. Watch whether she’s being pushed away from feed or water by other birds.
2. Feel her breastbone gently to see if she’s getting noticeably keel-like or thin.
3. Check her droppings for changes in colour, consistency, worms, or a sudden increase in watery droppings.
4. Look at her crop first thing in the morning to see if it has emptied overnight.
5. Check her eyes, comb, feathers and vent area for signs of being unwell, dirty, or irritated.
6. Make sure she’s actually eating a balanced feed, not just picking at treats or scraps.
7. Notice whether she’s quieter than usual, less active, or separating herself from the flock.
Common Causes
The most common reason is a feeding or flock-management issue, such as one hen being outcompeted at the feeder or not eating enough of a proper balanced ration.
Worms or other internal parasites are another common cause, especially if weight loss is gradual and droppings look changed.
Crop problems, including delayed emptying or a full crop that doesn’t behave normally, can also make a hen lose condition even if she still seems interested in food.
Less commonly, ongoing infection, pain, or another internal health problem may be affecting how well she uses her food. In laying hens, age and breeding can also play a part, but they shouldn’t be assumed to be the only reason.
What To Do
Start by separating her if needed so you can see exactly how much she’s eating and drinking. Offer a calm, low-stress setup with easy access to feed and water.
Check that her main feed is suitable for her age and purpose, and avoid filling her up with too many treats.
Keep a simple record of her weight, appetite, droppings and behaviour over a few days so you can tell whether she’s improving or slipping further.
If you keep chickens regularly, review flock hygiene, feeder access and routine parasite control as part of normal management.
When To Contact A Vet
Speak to a vet if the weight loss is ongoing, she stops laying and looks unwell, you notice breathing changes, a swollen abdomen, repeated vomiting-like movements, a very full or empty crop that doesn’t seem right, or she becomes weak, fluffed up or reluctant to move. Rapid or unexplained weight loss in a hen is worth checking properly, even if she is still eating.
Products That May Help
If you’re caring for a small flock, a few practical cleaning and routine-hygiene items can help support day-to-day management around feeders, drinkers and housing.
Related Questions
Why is my chicken eating but not gaining weight?
How do I tell if my hen has worms?
What should a healthy hen’s crop feel like?
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.