EGGS, HOW WELL DO YOU KNOW THEM?

More than 99% of the world’s animals lay eggs! Who knew?

According to Reader’s Digest and Parade, January is National Egg Month. Other organizations celebrate in May, but the egg’s unique combination of health benefits and comfort associations make them the perfect dish to start off New Year’s resolutions. People are urged to try new egg recipes, appreciate the role of egg farmers, and enjoy various egg dishes. Maybe even try new eggs?

Categories of Egg-Layers

Egg varieties from Nouveau Larousse Illustré (1897–1904)
  • All species of birds lay eggs, including hens, ducks, turkeys, geese, ostriches, and emus. Bird eggs have hard shells to help keep them from drying out. 
  • Most reptiles, including snakes, turtles, lizards, and crocodiles, lay eggs. Reptile eggs have softer, leathery shells that need to stay moist. 
  • Fish eggs are similar to those of frogs and toads
  • Most insects lay eggs, including bees, ants, mosquitos, ladybugs, butterflies, and moths. Insect eggs come in many shapes, sizes, and configurations. 
  • Monotremes, including the platypus and the short-beaked and long-beaked echidna, are the only two mammals that lay eggs.  Monotreme eggs are similar to reptile eggs, with a leathery outer covering instead of a hard shell like a bird egg, but they are not edible, so you’ll hear no more about them here.

Eggs are one of the most nutritious foods in the world. They contain proteins, vitamins, and fats that we need to stay healthy.

Bird Eggs

People eat the eggs of many birds, including: 

Quail, chicken, and ostrich egg
  • Chicken eggs are the most common edible egg. Indeed, most people haven’t eaten any others. They are fairly mild as far as taste goes and they have many vitamins and nutrients. Store bought chicken eggs are typically white, but chicken eggs have various different colored shells, such as brown or green, depending on the breed of chicken.
  • Duck eggs are similar to chicken eggs, but with a larger yolk and higher amounts of some nutrients, like folate, iron, and vitamin B12. The taste is richer and smoother and contains more fat and protein than a chicken egg. They have a thicker shell that allows them to stay fresh longer.
  • Turkey eggs are similar to duck eggs in size and taste. The egg has a thicker yolk and egg white, giving it a creamier taste and consistency. Some people prefer turkey eggs for cooking pastries because of the richer flavor. Turkey eggs are hard to find in stores because most farmers get more value from raising the bird rather than selling the egg.
  • Ostrich eggs weigh in at around 3 lbs., making them the largest of bird eggs. This is 20 times greater than a chicken egg! The shells have a creamy color and are extremely thick and hard to crack. If you do manage to get one open, you’ll find that each egg is packed with 2,000 calories. However, it has similar nutrients and runny yolk of a chicken egg.
  • Emu eggs weigh in less than an ostrich egg, at about 2 lbs. These eggs have a dark shell that is usually black in color and speckled with a deep green. Emu eggs are one of the richest tasting eggs. The yolk has the consistency of silly putty, and the egg white is thick like glue. When you cut into it, nothing will ooze out.
  • Goose eggs are about double in size to a chicken egg. They also have a heavier, more dense taste with greater protein content. The shells are thick and take more force to crack open. Goose eggs are much rarer than chicken or duck eggs because geese only lay about 40 eggs a year.
  • Quail eggs are tiny and delicate. The taste of a quail egg is lighter than most eggs and its nutritional contents are similar to those of chicken eggs. However, you would need to eat multiple quail eggs to match the same nutrition as a chicken egg. These tiny eggs are considered a delicacy in many countries and have even been used in healing remedies.
  • Pheasant eggs are similar in size to a duck egg, making them slightly larger than a chicken. The taste is light and less rich, like a quail egg. However, they have a more gamey taste.
The kiwi has the largest egg-to-body ratio of any bird.

Insect Eggs

Escamoles and chahuis in Mexico City

What about insect eggs? Entomophagy is the technical term for eating insects. Humans have eaten insect eggs for thousands of years, and the practice is still common in many tropical countries.

Widespread

Around 3,000 ethnic groups practice entomophagy, and 80% of the world’s nations eat insects. 

Delicious

Some insect eggs are considered delicacies.

  • Escamoles: Black ant eggs that are boiled or fried and often added to soups, tacos, or omelets 
  • Khai mod daeng: Weaver ant eggs that are high in vitamin, sugar, and protein 
  • Some say ant eggs taste like little bubbles of flavor that burst in your mouth
Khai mot daeng vendor in Isaan, Thailand

Sustainable

Insects require fewer resources than conventional livestock, making them a sustainable food source

However, eating insect eggs can also pose a health risk.  Fly eggs or larvae that survive in the gastrointestinal tract can cause intestinal myiasis, leading to abdominal pain, vomiting, and diarrhea.

Fish Eggs

Yes, people eat fish eggs, also known as roe, as an ingredient in many dishes and as a snack. Who hasn’t heard of caviar?

  • Caviar
    A type of salted fish egg that comes from wild sturgeon. Caviar is often eaten with blini, crème fraîche, and champagne. It has a smooth texture and a buttery, nutty flavor. 
  • Salmon roe
    Also known as ikura in Japan, salmon roe can be eaten in many ways, including on sushi, in pasta, or spread on toast. 
  • Other fish roe
    Fish roe can come from many types of fish, including trout, cod, paddlefish, and whitefish. It can be eaten as an appetizer or in sushi rolls. 

Fish eggs are a good source of nutrients like omega-3 fatty acids, vitamin D, and vitamin B12. However, fish roe is also high in cholesterol and often prepared with lots of salt, so people who are watching their cholesterol or sodium intake should be mindful of overconsuming. 

When sold in the U.S., fish roe must be labeled with the species of fish from which it came.

Beware! Some fish eggs are poisonous.

Reptile Eggs

Crocodile hatchling

And have you ever tried reptile eggs? Some South East Asian and Australian indigenous groups eat crocodile eggs, and you might be able to actually get them for consumption in parts of SEA and northern Australia. Some people report a mildly fishy flavor.

Iguana eggs are edible as are alligator eggs, but mother alligators are very protective of their eggs and young.

Snake eggs are edible but obtaining them often requires getting past a broody mother. Burmese pythons wrap around their clutch for months until they hatch. King cobras, the only snake that actually builds a nest, are quite protective of their nests. Even venomous snake eggs are safe to eat!

Python bounty hunter Donna Kalil takes python eggs as part of her efforts to rid Florida of the invasive snakes. Python eggs are chewy, but they can be tasty if prepared correctly. She even uses them to bake sugar cookies!

Tortoise hatchling

Sea turtle eggs are easily dug up, collected, and eaten or sold. Because one nest can contain as many as 100 eggs, they are a popular source of protein among communities living near sea turtle nesting beaches. However, the cumulative effect of consuming the heavy metals in sea turtle eggs can be toxic, particularly in children. Many species of sea turtles are endangered, and eating their eggs can cause serious ecological damage.

From what I’ve found online, reptile eggs are generally pretty bland and might taste a bit like chicken eggs, but with less flavor.

Danger!

In general, people should not eat the eggs of wild animals unless certain they are safe and properly identified.  In particular:

  • Poisonous fish eggs
    In ichthyotoxic fish, such as catfish, gar, and scullpins, the reproductive organs and products (including roe) are poisonous to eat. However, the meat is usually still fine.
  • Seabird eggs
    While some seabird eggs are edible, many can have a strong fishy taste and may accumulate contaminants from their diet, so caution is advised. 
  • Unidentified wild eggs
    If you cannot confidently identify the source of any wild eggs, do not eat them.

Many species of wild birds, fish, and reptiles are endangered or vulnerable. Eating their eggs could disrupt an entire breeding season and is often illegal.

Chicken Eggs

What follows is specifically about chicken eggs. 

Varieties and Variations

In the United States, each person consumes 280-286 chicken eggs per year on average.

Egg vendor in Poland with many sizes of chicken egg

The grade of eggs in the US refers to the actual quality of an egg’s shell, whites, and yolk. From best to worst, the grades are Grade AA, Grade A, and Grade B.

Eggs have many nutrients that are essential for health. Some say that the healthiest eggs are pasture-raised eggs with a Grade AA rating, a USDA Organic label, and the Certified Humane Raised & Handled certification. Research from Penn State’s College of Agricultural Sciences found that compared to eggs from conventionally-raised chickens, eggs from pasture-raised hens had double the amount of vitamin E and long-chain omega-3 fats.

Others say that the best tasting eggs come from pastured chickens. Pasture-raised chickens’ eggs (also known as pastured eggs) are by far the best eggs to buy, but make sure you at least get free range.

Commercially grown and free-range eggs

The color of the yolk indicates nutritional value, with darker yolks indicating a diet of foraged grasses and bugs. However, the color of the eggshell (white, brown, or pastel, determined by the breed of the chicken) has no effect on the taste or quality of the egg.

Frankly, commercial egg production is pretty brutal. I won’t go into it here, but some people buy eggs from free-range, pasture raised chickens because it’s the humane choice.

The type of chicken feed can influence the egg’s flavor, especially when the feed contains strong-tasting foods like onions, garlic, or herbs, which can impart a subtle taste to the egg; however, the change in taste is usually not dramatic and depends on the specific diet of the chicken. 

Storage

Surprising, to me: raw eggs can absorb strong refrigerator smells. Yet another reason to keep eggs in their cartons and refrigerated foods in containers!

Varieties of grocery store eggs

As a general rule, unwashed eggs will last around two weeks unrefrigerated and about three months (or more) when refrigerated.

Washed eggsi.e., grocery store eggs—while they can, technically, last longer, most experts recommend consuming washed eggs within a month for optimal freshness and safety.

Eggs of undetermined age? Fresh eggs sink in water, while older eggs float because they contain more air pockets.

And let’s salute hardboiled eggs in particular: portable and convenient, and beautiful when decorated for Easter!

Symbolic Eggs

Decorated eggs called pysanka have become a national symbol of Ukraine. This Museum of the Pysanka, established in 1987, houses collections of pysanka from every region of the country.

And just as an aside: eggs have many symbolic meanings. 

  • Perhaps the best known is new life and rebirth, representing life emerging from within. Many cultures associate them with the cycle of life and death
  • Fertility: And thus linked to love
  • Hope and purity, particularly in art. 
  • Luck, wealth, and joy: Several Chinese and Vietnamese traditions include red eggs as a symbol of joy, luck, wealth, or good fortune.
  • Protection: Mexican huevos limpia rituals use an egg to absorb negative energy and block curses a person may be carrying.
  • Spring: Many spring equinox celebrations, including Ostara and Nowruz, include eggs as a symbol of the new season, rebirth, and breaking the ice of winter.
  • Dichotomy: The yolk and the white became the essence of yin and yang, split by the god Pangu in Chinese mythology to become light and darkness.
  • Creation: In Hindu mythology, the cosmic egg Hiranyagarbha contained the essence of creation and the god Brahma.
  • Good and evil: The Dogon people of Mali believe the world was first created in miniature inside an egg by the supreme deity Amma, but it cracked, allowing the twins of good and evil to escape.
  • Resurrection: In Christianity, Easter eggs symbolize the resurrection of Jesus from the tomb.
  • The world: In Egypt, the egg often appears as a symbol of the world, with the yolk representing the heavens and the earth.

Pretty much everyone has tasted chicken eggs, straight up or fancied up. But as mentioned above, there are many other kinds of eggs out there with varying sizes, tastes, and looks. Mix it up from time to time with a different egg for an entirely renewed egg experience. What kinds of eggs have you tried?

Bottom Line: There’s more to the egg than a grocery store shelf.

Chickens, Real Likable Birds

Dorothy L. Sayers introduced me to Buff Orpington chickens. In Busman’s Honeymoon, a character named Miss Twitterton was forever obsessing about her flock.

Decades later, that breed name was still with me when I wrote “Real Likable Birds” a fiction piece. Here’s a quote:

from “Real Likable Birds” by Vivian Lawry

My personal experience with chickens is pretty minimal. My paternal grandparents had a hard-scrabble farm in the mountains of eastern Kentucky. Granny kept a flock of chickens, primarily for eggs for the table, but when old hens stopped laying well, there was chicken for dinner, too. One of my most vivid early childhood memories is from a time when Granny killed one of those old hens. She held it by the legs and put its head on her chopping block—a big old tree stump in the back yard—and cut its head off with an axe.

When it stopped flopping around on the grass, spraying blood everywhere, she again held it by the legs and dipped the carcass into a big cauldron of boiling water, also there in the back yard. The boiling water loosened the feathers for plucking. I helped with that, and the smell was awful—a combination of ammonia and poop. We put the feathers aside to wash later. They would be made into a feather tick for a warm bed in winter.

She singed the pinfeathers off the carcass over the wood burning stove in the kitchen and slit it open in the dry sink. Then she showed me a row of little yellow spheres like graduated pearls, the biggest about the size of my fingertip. She said those would have been eggs. Decades later, I learned that a hen is born with all the eggs she will ever lay.

Everyone Loves Chickens

It is estimated that there are more than 33 billion chickens worldwide! Outnumbering the human population, chickens are one of the most common farm animals.

ZZ, a Barred Rock hen

For no particular reason, I decided to learn more about this bird that is so common and yet so unfamiliar today beyond the clichés in common parlance:

  • Flopping around like a chicken with its head cut off
  • Fly the coop
  • Pecking order
  • Scarce as hen’s teeth
  • Stuck in my craw
  • Put all your eggs in one basket
  • Walk on eggshells
  • Mother hen
  • No spring chicken
  • Rule the roost

So What’s to Know, Anyway? Just Read On!

Dawn, a Grey Silkie hen

Chickens are the closest living relatives of dinosaurs! Science has documented the shared common ancestry between chickens and the Tyrannosaurus rex.

Chickens were domesticated about 8000 years ago, and evolved from the Red or Gray junglefowl, which are tropical birds. These wild birds fly to escape predators and to roost high up in trees. Today’s domestic chickens still have the ability to fly, although not as effectively. Chickens can fly for short distances – enough to clear obstacles or reach a perch, say about 15′ of the ground.

DT, a Buff Orpington hen

Chickens are faster than you might think. They can run up to 9 mph in short bursts, but their real power is they can turn on a dime. This speed and agility helps keep them safe from predators.

Some research suggests that chickens are just as clever as human toddlers. Hens have exhibited mathematical reasoning, object permanence, self-control, and even structural engineering. Chickens also demonstrate empathy and a number of emotional responses! Chickens can learn to do tricks twice as quickly as a dog.

Sleepy Chickens

Sleepy chicks

Research has shown that chickens experience REM (rapid eye movement) while sleeping, which indicates dreaming in humans.

They also have a sleep phase that humans don’t experience called unihemispheric slow-wave sleep, where one half of the brain is asleep and the other is awake. This means that chickens can sleep with one eye open, which is especially useful for looking out for predators.

The “alpha” hen sleeps in the middle while roosting and the others that are lower in the hierarchy sleep on the outside with the outer eye open to watch for predators. These chickens on the outsides switch sides throughout the night so they can rest the other eye.

Chicken Anatomy

Peggy, a White Paint Silkie hen

Like humans, chickens have color vision, and are able to see red, green, and blue light. However, unlike humans, chickens are also able to see ultraviolet light, which are the colors we see when using a black light!

A chicken’s left eye is far-sighted, and their right eye is near-sighted. This has to do with the position of the embryo in the egg, and is very adaptive for finding food up close and spotting predators at a distance.

The position of a chicken’s eyes allow it to see in a 300 degree field. (Humans can only see 180 degrees.)

Sometimes, pervy geese like to spy on chickens in the bath!

While this may seem contradictory, chickens (like some other birds) bathe in dirt. They have an oil gland on their back that spreads oil over their feathers to make them waterproof. Over time, the oil goes stale, and chickens need to wash the old oil off through dust bathing.

Dust bathing is when chickens crouch on the ground and spread dirt or another dusty material over their body. The stale oil sticks onto the particles of dirt and falls off when the chicken shakes off the dirt. Chickens can then spread fresh oil onto their feathers.

Chickens don’t pee, they have a cloaca (just like dinosaurs) and their waste is a combination of poo and pee. That’s why their manure is considered “hot” and needs to break down before it is safe for plants: it’s full of concentrated chicken pee paste!

Chickens use their combs and wattles to help cool off in the summer. It’s kind of like mammals having big ears in desert environments. Blood cools off in the extremities and helps keep an animal from overheating.

Some claim that on a hot day, feeding chickens frozen veggies and fruits, which sit in their crop/craw, will cool chickens from the inside.

Chicken Feed

Natasha, a Green Queen hen

Some people think that chickens eat only plants and grains, but they actually eat (and enjoy) a much wider variety of foods, including bits of dairy or meat. Many owners use kitchen scraps to supplement their flock’s feed, which makes for an environmentally-friendly way to handle leftover food waste.

Chickens also like to peck around in the dirt and find bugs to eat, for example, beetles, larvae, slugs, grasshoppers, and even poisonous snakes.

In short, they’ll eat pretty much anything, but often have favorites—as reported by one chicken owner: “Mine LOVE papaya.” FYI, they can’t taste spice.

A chicken doesn’t have teeth but instead eats pebbles and store the grit in a pouch, known as its craw or crop, to crush food.

Chicken Behavior

Dorothy and Estelle, Buff Orpingtons

Chickens live in groups called flocks. The social structure of these flocks depends on a hierarchy called a pecking order, i.e., an order of dominance. Each chicken knows its place in this order, which helps to maintain a stable, cohesive group.

Chickens are predators to anything smaller than themselves. They’ll pick on or even kill other chickens they think won’t make it.

Chickens have over 30 unique vocalizations that they use to communicate a wide variety of messages to other chickens, including mating calls, stress signals, warnings of danger, how they are feeling, and food discovery.

The noise a chicken makes when it sees a particular person is its name for that person.

To keep roosters from fighting and keep hens from being stressed, flocks need hens to outnumber roosters. Depending on the breed, recommended ratios range from 1:5 to 1:12. Too many roosters can cause fighting over hens that aren’t “their own.”

With more than one rooster, each rooster should have its own territory—again, to minimize fights over territory, hens, and resources. Hens can lose neck and tail feathers from being mounted too often. A hen can mate with a rooster and then change her mind at the last minute and reject his sperm if she deems another rooster to be superior—also not conducive to peace.

Lazarus, a barnyard mix rooster

Roosters crow many hours of the day, not just at dawn. When a rooster in a flock dies, a dominant hen may develop male features such as spurs, long wattles, and combs, and attempt to crow and mate.

A chicken can be extremely aggressive at times, willing to beef up with things larger than herself. One mama hen named Lily chased an oblivious squirrel across the yard for existing. She also attacked a 100 lb Pitbull for getting close to her only chick.

Studies have shown that chickens are self-aware and can distinguish themselves from others. Chickens can also demonstrate complex problem-solving skills.

“Eggcellent!”

Latifah, an Ayam Cemani hen

Hens can lay eggs all on their own- no rooster needed!!! Indeed, some flocks are hens only.

One hen may lay as many as 300 eggs per year! As hens age, the number (and quality) of eggs laid tends to decrease.

What is the difference between brown and white eggs? The color of the shell depends on the breed of the hen, but it’s not feather color that tells you what color the egg shell will be. Chickens actually have earlobes, and generally, hens with red earlobes will lay brown eggs, and hens with white earlobes lay white eggs.

Although the color of the shell differs, the nutritional content and flavor do not. Nevertheless, brown eggs can cost 10-20% more than white eggs. The hen’s diet determines the color of the yolk.

A chicken will only lay one color egg in her lifetime.

Unwashed eggs will keep at room temperature for up to two weeks because they are laid with a protective coating. Washing away this coating (as is common in commercial US egg farms) means the eggs must be refrigerated. Refrigerated, they’ll last 5-6 weeks.

What Color?

Although most eggs are either brown or white, a surprising number of breeds lay other colored eggs:

  • Blue – The Cream Legbar is the best layer of blue eggs. She is a cross between the Leghorn, Cambar, Barred Rock, and Araucana.
  • Chocolate Brown – Many people like the dark (chocolate) eggs of the Black Copper Maran. Although those deep-colored eggs are beautiful to look at, they do come at a price. Buying good quality stock is expensive.
  • Brown – Depending on the shade of brown you want, you have a vast selection of breeds. The Rhode Island Red is perfect if you are looking for a mid-brown egg.
  • Green – The Isbar is your best chance to get green-colored eggs. The depth of green coloration will depend on the quality and genetics of the bird. While some lay a deep moss green, others can lay anywhere from a light green to a khaki-colored egg.
  • Plum-Croad Langshans are the only breed known to lay plum-colored eggs on a relatively consistent basis (the quality of the color will depend upon the parentage).
  • Pink – Pink eggs can be a matter of perception. To some folks, the egg may appear to be a light tint. To others, it will appear a pale pink. Orpingtons are your best bet for consistently pink-colored eggs.

Baby Chickens

In nature, a hen selects a nest site and lays a clutch of eggs (6-13), one egg per day. Once her clutch is complete, she sits on the eggs full time, leaving only to eat and drink.

Chickens tend to their eggs carefully. A hen turns her eggs approximately 50 times a day to keep the embryo from sticking to the side of the shell.

Buff Orpington and Speckled Sussex chicks

In a fertilized egg, the white (albumin) becomes the “chick” and the yolk is a food source for the growing baby. After hatching, a chick can go up to 72 hours without food because it’s still digesting that yolk.

When chickens lay eggs, the mother hens make noises that chicks still incubating inside of their eggs can hear and respond to. The chicks even make tiny “peeps” back from inside of their eggs!

Chicks as young as 2 days old recognize object permanence, a skill acquired by humans about 6 months of age. This means they know an object still exists even when taken away or hidden.

Chicks learn from their mothers and others in the flock, such as which foods are good to eat and where to find water.

A male chicken less than a year old is a cockerel; over a year old is a cock. A female chicken less than a year old is a pullet; over a year old is a hen.

Chicken Breeds

Pinny, a Red Cuckoo Silkie hen

People exhibit (show) chickens much like dog shows. There is a standard of perfection for each breed of chicken recognized by the American Poultry Association. There’s also an American Bantam Association, which regulates smaller bantam-sized poultry breeds.

The smallest breed of chicken, weighing only 8-15 ounces, is the Serama.

Silkie chickens have dark skin and bones as well as walnut-shaped combs for the males instead of your typical comb.

Ayam Cemani chickens, from Indonesia, have black feathers, faces, skin, and even organs. They lay pale pink eggs.

An American breed of chicken called the Buckeye was developed by Nettie Metcalf of Warren, Ohio, in the late 19th century. She bred a Buff Cochin male with Barred Plymouth Rock females, and named the new breed for Ohio, the Buckeye State. It is still the only American chicken breed developed by a woman. (The American Poultry Association recognizes 53 large chicken breeds, plus additional bantam chicken breeds.)

Bottom Line: Chickens are smart, complex, and all around interesting. They’re real likable birds!