It is not normal to put your first egg and take several days to put another one.
ISA Brown hens (like all Browns) are usually raised on breeding farms until 16 weeks of age.
After 16 weeks they move to their final accommodation to acclimatize during that month they need to start laying eggs.
It is an important and critical period of his life.
He arrives as a teenager and has to become an adult during that period of adaptation.
It is very important that they have an adequate diet, which is usually called pre-lay feed, so that they can finish developing their reproductive system.
Their efficiency in laying eggs, for the rest of their lives, depends a lot on how well they are fed during that period.
At the beginning they usually put a small egg and may take a day or two to put another one that can be very large.
The egg factory needs to make its first adjustments.
Sometimes that very large egg can cause problems and get stuck but it is not frequent, the great eslasticity of that young organism solves many problems.
Many chickens start to put in normally from the first day.
The most efficient (10%) will lay a daily egg for a hundred days in a row before taking a break of a day or two before beginning the next series.
The least efficient (10%) will do the same in periods of ten days.
And all the intermediate possibilities for 80%
It is important to insist on the importance of feeding during that first period just before starting to lay eggs.
The health of the hen for the rest of his life, and his ability to lay eggs, depend a lot on good nutrition during that period.
A healthy and well-fed ISA Brown hen will lay a daily egg (> 90%) throughout the year, regardless of any other condition.
The farms of more than 200,000 chickens are waiting for it.
What nobody can tell you is which of the 200,000 chickens you have been lucky.
Good luck
