One of the most delightful parts of keeping backyard chickens is collecting fresh eggs each day. But every now and then, you’ll open the nest box and find something… unusual. Don’t worry—you’re not alone. Chickens sometimes produce “weird eggs” that may look odd, but usually have simple explanations.
When Eggs Aren’t Quite What You Expect
If you keep backyard chickens, you probably expect to find nice, round eggs in the nest box most mornings. But every now and then, one pops up that makes you do a double take. Maybe it’s tiny, enormous, oddly shaped, or speckled in a way you’ve never seen before. These weird eggs can be amusing, puzzling, or even a little shocking—but for the most part, they’re perfectly normal.
In this post, we’ll explore the many types of weird eggs your hens might lay, from oblong and double-yolked to shell-less, pimply, or even egg-within-an-egg. We’ll explain what causes them, whether they’re safe to eat, and what you can do (if anything) to help your flock. Consider this your ultimate guide to the quirks of backyard egg-laying!
Double Yolkers
The jackpot of weird eggs! Double-yolkers are extra-large eggs with two yolks inside. They occur when a hen releases two yolks into the oviduct close together. Younger hens at the start of their laying cycle are more prone to this, though it can happen at any age. While exciting to find, these eggs don’t usually hatch well if incubated. However, they make really awesome hard-boiled treats.
Double – yolkers are:
- Common for new layers; within the first month
- Not a concern for the hen’s health
- Safe to eat
Fairy Eggs / Baby Eggs
These are tiny eggs, sometimes no bigger than a grape. Usually these eggs have no yolk at all. Fairy eggs are often laid by pullets (young hens) whose reproductive systems are still maturing, or by older hens experiencing a temporary hiccup. They’re harmless and actually kind of fun to find—some keepers save the shells as novelties.
Fairy Eggs are:
- Occasional occurrences
- Not a concern for the hen’s health
- Not desirable to eat (too small!)
Egg Pimples /Calcium Deposits
Sometimes you’ll see little bumps, warts, or rough patches on an eggshell. These are extra calcium deposits that form during the shell-making process. When very small, they are called pimples, and give your egg a slightly textured feel. Slightly larger ones are referred to as calcium deposits. They both form the same way and can happen due to minor glitches in the shell gland, excess calcium in the diet, or simply age. They’re harmless and don’t affect the egg inside.
Calcium Deposits on Eggs are:
- Common
- Not a concern for the hen’s health
- Safe to eat
Speckled Eggs
While some breeds have speckled eggs normally, the speckles I’m referring to here are speckled eggs from hens that do not normally have speckles. These unusual eggs have dark or light spots across the shell. The speckles are smaller than the calcium deposits described above and flatter than pimples. Like the calcium deposits, they too are usually just calcium spots laid down prior to the formation of the cuticle, or the last layer of the eggshell.
Speckled eggs often result from extra calcium deposits during shell formation. They’re completely safe to eat and are even prized by some keepers for their unique appearance.
Speckled Eggs are:
- Common on certain hens (but may never appear on others)
- Not a concern for the hen’s health
- Safe to eat
Oblong Eggs
Sometimes you’ll open the nesting box and find an egg that looks unusually long or stretched out—these are oblong eggs. Their elongated shape is usually caused by a disturbance while the egg is forming in the shell gland. Stress, sudden changes in the environment, or even a young hen’s still-maturing reproductive system can all play a role.
While oblong eggs may look strange, they’re generally fine to eat. In fact, many backyard chicken keepers find them amusing additions to their egg basket. If you notice them regularly, it may be worth keeping an eye on your flock’s stress levels and nutrition, but most of the time, oblong eggs are just a harmless oddity.
Weird Oblong Eggs are:
- Common on certain hens (but may never appear on others)
- Not a concern for the hen’s health
- Safe to eat
Weird Eggs with Paper-Thin Shells
These eggs have shells so delicate they can crack in your hand. Often, they result from a calcium deficiency, stress, or a hen’s reproductive system working too quickly. Young pullets may produce them as they get into a rhythm, and older hens may lay them more often as their systems slow down. Ensuring free-choice calcium (like oyster shells) usually helps.
If this happens in your coop rarely, you shouldn’t worry. If you have a hen who is more consistently laying thin shells, you may want to consider changing up the calcium and adding probiotics to the water.
Paper-thin shells are:
- Occasional occurrences
- Not a concern for the hen’s health, unless a consistent occurrence
- Probably best thrown away, as the yolk is potentially exposed to contamination
Weird Eggs with No Shell
These super weird eggs come out wrapped only in their inner membrane, with no hard shell. They feel rubbery and fragile. Shell-less eggs can be caused by a calcium deficiency, stress, or even a sudden scare in the coop. They may be laid by older hens. If they happen occasionally, it’s nothing to worry about. If frequent, check your flock’s diet to ensure they’re getting enough calcium (like oyster shell supplements).
Weird Eggs with no shells are:
- Rare occurrences
- Not a concern for the hen’s health
- Probably best thrown away, as the yolk can be exposed to contamination
Wrinkled or Corrugated Eggs
These eggs look like someone ironed a crease into them or gave them a crinkled shell. They’re typically caused by a disruption in the shell-forming process—anything from stress, illness, or an older hen’s age can lead to it. Occasional wrinkling isn’t usually a sign of concern, but if it’s consistent, it may indicate respiratory disease in the flock.
Even though we have older hens that still lay eggs, I can only remember getting a wrinkled egg once or twice. Sorry, no picture.
Wrinkled Eggs are:
- Rare
- Not a concern for the hen’s health, unless a consistent occurrence
- Safe to eat
Flat-Sided Eggs
Also called “slab-sided,” these eggs look a little squished, as if one side didn’t develop fully. They happen when two eggs bump into each other in the shell gland before they’re finished forming. Usually, it’s just a rare occurrence and nothing to worry about. Unless of course, the shell is cracked or damaged; then bacteria can enter and the egg should be tossed.
Flat-Sided Eggs are:
- Rare
- Not a concern for the hen’s health
- Safe to eat
Egg Within an Egg
The unicorn of weird eggs! One of the rarest oddities, this happens when a fully formed egg travels backward in the oviduct and gets encased by a second egg. You end up with a regular egg inside another, often huge, egg. It’s a curiosity more than a concern, but it does put extra strain on the hen, so it’s not something you’ll see often.
In all our years of keeping hens, we have only seen it once, and we could not believe our eyes! Based on some research, it does appear normal but not common. If this happens to you, be sure to document it well with videos and photos!
- Rare
- Not a concern for the hen’s health
- Safe to eat
Lash Eggs
Lash eggs aren’t really eggs at all. Instead, they’re masses of tissue, pus, or yolk-like material caused by an infection in the hen’s oviduct (often salpingitis). They can look shocking—rubbery, misshapen, and very unlike a normal egg. If you find one, it’s best to monitor the hen closely and seek veterinary advice if she shows other signs of illness.
Lash Eggs are:
- Rare
- Seek medical attention for your hen and isolate her from the flock.
- Not eggs at all; are usually pus. Discard.
Quick Reference Guide to Weird Eggs
| Type of Egg | Description | Likely Cause | Is it Safe to Eat? |
|---|---|---|---|
| Double-Yolker | Extra-large with two yolks | Two yolks released close together | ✅ Yes – a fun surprise |
| Fairy Egg (Baby Egg) | Tiny, often yolkless | Immature pullets, hormonal glitch | ✅Yes – harmless |
| Speckled Egg | Spotted, sometimes textured shell | Extra calcium deposits | ✅Yes – safe to eat |
| Calcium Deposits (Egg Pimples) | Bumps or warts on shell | Extra calcium, shell gland glitch | ✅Yes – safe to eat |
| Oblong Eggs | Unusually long shape | Immature pullets, hormonal glitch | ✅Yes – safe to eat |
| Paper-Thin Shell | Extremely fragile shell | Calcium deficiency, stress, pullets or older hens | ⚠️ Do not eat. Fix diet if frequent |
| Shell-less Egg | Soft, rubbery, no shell | Calcium deficiency, stress, scare | ⚠️ Do not eat. Only a concern if frequent |
| Flat-Sided Egg | Squished or uneven on one side | Two eggs meeting in shell gland | ✅Yes – rare quirk |
| Wrinkled/Corrugated Egg | Creased or crinkled shell | Stress, age, illness | ⚠️ Monitor if common, but egg is safe to eat |
| Egg-Within-an-Egg | Huge egg with another egg inside | Rare reproductive glitch | ✅ No cause for worry – just rare |
| Lash Egg | Rubbery, pus/tissue mass, not a true egg | Infection (salpingitis) | ❌ Do not eat and consult a vet for advice |
Closing Thoughts: Weird Eggs
Weird eggs are part of the backyard chicken adventure. Most of the time, these oddities are harmless and even entertaining reminders that hens aren’t machines—they’re living creatures with quirks. While nutrition, age, and stress often play roles in unusual eggs, the occasional odd find is perfectly normal. Keep an eye on your flock, provide a balanced diet, and you’ll continue enjoying fresh eggs—odd ones and all.
