Is this an egg?

[cluck love]

I went out to the coop this morning and this is what I found. I have 4 RIR who are 12 weeks old.

 

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That is definitely not an egg.. this could be str8 urine.. as it's the white color.. however you need to waite almost another 12 weeks before your RIR will begin laying.. for this time of year atleast. I would keep and eye out.. look at the bottoms of your chickens.. with that much mess there maybe some remnants.. so that you can watch that particular chicken.