Quantity
Even one raw egg fed to the flock can be the trigger that starts the behavior in a curious hen. It's not about quantity — it's about teaching the association between "egg shape" and "food."
Notes
The most common trigger is well-intentioned keepers feeding cracked or surplus eggs back to the flock in raw form. Scrambled or hard-boiled eggs (broken into unrecognizable pieces) are a different story — most hens don't connect scrambled eggs with the eggs in the nest box. The key is making sure the eggs don't look or smell like nest box eggs.
Negative Signs
* Finding empty, pecked-apart eggshells in nest boxes
* Egg residue (dried yolk) on hens' beaks and feathers
* Sudden drop in collectible eggs despite hens still laying
* Hens lurking near nest boxes waiting for others to lay
* Wet, yolky nest box bedding
FAQ
Q: My hen is already eating eggs. What do I do?
A: Collect eggs as often as possible — some keepers check every hour during peak laying times. Use ceramic or wooden dummy eggs in the nest boxes (pecking these and getting nothing teaches them eggs aren't worth breaking). Ensure strong shells by providing free-choice oyster shell. Darken nest boxes so hens can't see eggs easily. As a last resort, roll-away nest boxes prevent hens from accessing eggs after laying.
Q: Can I feed my chickens cooked eggs?
A: Yes — scrambled or hard-boiled eggs, thoroughly mashed so they're unrecognizable as eggs, are an excellent protein source for chickens. The key is that they should not look, smell, or feel like a raw egg. No shells, no yolky appearance.
Alternatives
Scrambled or hard-boiled eggs, mashed up thoroughly so they don't resemble raw eggs, are a nutritious treat that doesn't trigger egg-eating behavior. Cook them, mash them, and mix them with other food. Your hens get the nutrition without the disastrous behavioral lesson.
Risks & Disclaimer
If you've been feeding raw eggs and notice egg-eating behavior starting, stop immediately. Collect eggs as frequently as possible (multiple times daily), ensure nest boxes are dark and comfortable, and provide extra calcium (oyster shell) to ensure shells are strong. Once established, this behavior is extremely difficult to eliminate.