Chicken egg size is something each owner of a backyard flock immediately points out Chickens naturally lay eggs in various sizes: commonly small when they are young, and bigger as they age. As chickens mature and age, their eggs become bigger. Usually a chicken lays one egg every 26 hours, although occasionally days pass without laying.
When chickens age, eggs grow in size, but shell quality and production declines.
Why Chicken Eggs Are Different Sizes
Many factors affect the size of eggs. Breeds of chickens matter a lot. Some breeds, known for production, lay bigger eggs than dual purpose breeds.
Also health and nutrition of chicken plays a role, together with its own size. Bigger and heavy chickens tend to lay bigger eggs. Healthier birds give more high-qualitay eggs, and quality of life matters, hence organic free range eggs commonly are bigger.
New chickens, that learn the laying process, occasionally produce especially big eggs or even extra small. This is normal. There can even appear little calcium bits on the shell or lines and cracks.
Chickens can lay smaller or bigger eggs, for instance double yolked, when they start to lay or while molting. But every breed has its typical size and stays at it.
Eggs become bigger and chickens lay less commonly while they age. Four until five years is a old age for laying chickens.
The USDA classifies eggs in six categories according to weight of a dozen, not according to visual size. The most common size of chicken egg in stores is large. A large chicken egg weighs around 50 grams or 1.75 ounces.
Jumbo eggs, the biggest, require a minimum of 30 ounces for a dozen. Peewee eggs weigh under 18 ounces for a dozen, so each is a bit more than one ounce.
A medium egg and a large egg have the same size yolk, where the main nutritional value stays. A large egg simply has more white. Instead, consumers prefer to buy large eggs instead of medium or mixed weight boxes.
Although it is hard to measure pain of chickens, facts show that chickens do not suffer during laying. So probably chickens with big eggs do not hurt more than young ones with small ones. Some backyard flock owners get impressive big eggs.
One owner found an egg of around 90 grams rather than a center of 75 grams, and it was doubleyolked.