What matters is what the nutrition levels of the grain mix is.
There should be a tag listing ingredients and protein percentage.
The egg eating could be a lack of nutrition, protein and /or calcium...
...or could also be a crowding/behavioral issue.
I see you're fairly new here, so....
Welcome to BYC!
Where in this world are you located?
Climate, and time of year, is almost always a factor.
Please add your general geographical location to your profile.
It's easy to do, (laptop version shown), then it's always there!
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