A hen can lay 6 eggs per week; it takes about 25 hours for the hen to make one.
Young hen lay small but freequent eggs; as they get older they produce big eggs, but less frequently.
A natural protective layer on egg is called 'bloom'. washing them removes this layer thus damaging it.
Calcium deposite on egg is specific to the hen. A hen deposites the same amount of calcium in all its eggs.
The quality of egg in terms of nutrition is dependent on the quality of food they take.
Usually, a red eared chicken produce brown colored egg; while chicken with white ear lobe produce white eggs.
Egg production can be increased by adjusting the light. They lay eggs more frequently when they have atleast 14 hours of natural or artificial light in a day.
Eggs produced in the absence of a rooster is not fertile. they will not hatch if you put them in an incubator.
Nutritional value of egg is different in free ranging hen and in battery hen.
Currently there are more than 150 chicken species and hundrends of chicken breeds.
