Goose and duck eggs pack the most protein per egg, but the answer depends on whether you’re comparing whole eggs or equal portions. A single duck egg delivers about 12 grams of protein per 100 grams of cooked egg, compared to 10 grams for the same weight of chicken egg. Turkey eggs come in at roughly 10.8 grams per egg, while tiny quail eggs contain just 1 gram each.
Protein by Egg Type, Side by Side
Bigger eggs generally mean more total protein, simply because there’s more egg. A large chicken egg (about 50 grams) provides roughly 6 grams of protein. A duck egg, which typically weighs 70 grams, delivers around 9 grams. A turkey egg weighs about 80 grams and contains nearly 11 grams of protein. Goose eggs are the largest commonly available option, weighing around 144 grams, and can contain 20 grams of protein in a single egg.
If you’re comparing gram for gram, though, the differences narrow. Per 100 grams, duck eggs lead with about 12 grams of protein versus 10 grams for chicken eggs. The trade-off is fat: duck eggs also carry 18.5 grams of fat per 100 grams, compared to 11 grams in chicken eggs. So while duck eggs are more protein-dense, they’re also significantly richer overall.
Quail eggs sit at the other end of the spectrum. Each one weighs about 9 grams and contains just 1 gram of protein. You’d need three or four quail eggs to match a single chicken egg. Per 100 grams the protein content is similar to chicken eggs, so the small size is the only real disadvantage.
Protein Quality Matters, Not Just Quantity
Total grams of protein only tell part of the story. Your body needs specific essential amino acids from food, and some eggs deliver a more complete profile than others. Guinea fowl eggs score highest for overall protein quality, with a total amino acid score of 0.92 out of 1.0. Quail eggs scored 0.82, turkey eggs 0.81, and standard chicken eggs landed at 0.75.
Guinea fowl eggs are particularly rich in branched-chain amino acids, the group most important for muscle repair and growth. They contain 9.2 grams of leucine per 100 grams of protein, nearly double the 5.6 grams found in chicken eggs. Leucine is the amino acid that most directly triggers muscle protein synthesis, which is why it gets so much attention in sports nutrition. Guinea fowl eggs also had the highest proportion of essential amino acids overall: 55% of their total protein, compared to about 41% in standard chicken eggs.
Turkey and quail eggs fall in between. Turkey eggs are notably high in histidine and lysine, while quail eggs are strong in leucine and threonine. All bird eggs provide complete protein, meaning they contain every essential amino acid, but the proportions vary enough to affect how efficiently your body uses that protein.
Where the Protein Lives Inside the Egg
A whole raw egg is about 12.6% protein by weight. The yolk is actually more protein-dense than the white: 15.9% versus 10.9%. This surprises most people, since egg whites have a reputation as the “protein part” of the egg. That reputation comes from the fact that whites are almost pure protein and water, while yolks contain significant fat alongside their protein. If you’re eating whole eggs, the yolk contributes a meaningful share of total protein along with vitamins and minerals you won’t get from whites alone.
Cooking Nearly Doubles Protein Absorption
How you prepare your eggs changes how much protein your body actually absorbs. Raw eggs have a protein digestibility of only about 51%, meaning roughly half the protein passes through without being used. Cooked eggs jump to about 91% digestibility. That means a cooked chicken egg with 6 grams of protein delivers roughly 5.5 usable grams, while a raw egg of the same size provides closer to 3 grams.
This applies across all egg types. The heat from cooking unfolds the proteins and makes them accessible to your digestive enzymes. Boiling, scrambling, frying, and poaching all achieve similar improvements. The cooking method matters far less than simply cooking the egg at all.
The Most Practical Choice for Protein
If your goal is simply maximizing protein intake, the most practical answer for most people is chicken eggs. They’re inexpensive, widely available, and deliver reliable protein with a well-studied nutritional profile. Two large chicken eggs give you about 12 grams of protein for very few calories.
Duck eggs are the best upgrade if you can find them. They’re about 20% more protein-dense than chicken eggs gram for gram, and they’re increasingly available at farmers’ markets and specialty grocers. Turkey eggs offer even more total protein per egg due to their size, but they’re rarely sold commercially because turkeys lay far fewer eggs than chickens, making them expensive to produce at scale.
Guinea fowl eggs are the standout for protein quality rather than quantity. Their superior amino acid profile means your body can use a higher percentage of the protein they contain. They’re a niche product in most Western countries but common in parts of Africa and Asia. Quail eggs, while popular as appetizers and in certain cuisines, require eating several to match a single chicken egg, so they’re not an efficient protein source unless you simply prefer the taste.