Chickens breaking eggs

[Nal0114]

Hi guys my name is Nicole I am relatively new to chicken owning.

So currently I have 20 chickens

1 rooster​

3 New Hampshire Reds​

16 Rhode Island Reds​

​

Yesterday when I got home from work I went through and collected my eggs like I always do. Only one of my eggs was broke open, and a NH Red threw the shells across the pen when I got to that box to get the egg.

They definitely get enough vitamins and minerals, so I don’t know what would be causing this behavior. They didn’t eat the inside of it, just the shell.

Any ideas of their problem or are they just being little buttholes.

 

[aart]

Was the thrown shell good and hard?
How old are these birds, in weeks or months?
What all and how exactly are you feeding them?
How many nests do you have?
How big are your coop and run, in feet by feet?
Dimensions and pics would help here.

 

[Nal0114]

I’ll post pics when I get home from work