Problem Eggs

[ODchickens]

Can anyone tell me the problem with these eggs?

 

[CascadiaRiver]

Looks like what my mom calls "wrinkles" just pulled out an egg yesterday that had one of these "wrinkles" but smaller than yours

 

[aart]

Can anyone tell me the problem with these eggs?

Those are some serious cracks....I assume the shells are thin rather than thick?
Were these eggs gathered fresh from the coop looking like that?
Are all your birds laying eggs like these?
How long has this been going on?

More info would help:
Age and breed of birds?
What and how exactly are you feeding?
Climate/location?
Housing(size), nests, number and genders of all birds.
The more details the better.

 

[ODchickens]

Answers.
The shells are normal except for the cracks that are sealed when gathered fresh from the coop.
By the color of the eggs it might be 1 or 2 of my girls laying them. It's been going on for about a week.
The girls laying these are 2 years old.
They eat layer pellets. I'm on Long Island and it is cold and snowy.
I use sand inside the coop and straw in the run.