Flossie first egg!

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She's been acting strange past few days. Been going under the grill instead of nest box with 2 fake eggs in it so we put some shavings under there she made a nest and today when I let the rest outside she wasn't with them went to look & sure enough was under grill. I went outside & heard the greatest racket! I thought she was hurt! She met me as I was going to check and came on outside .I went to look and is 2 eggs! Maybe she laid one yesterday too & I didn't see it or someone else laid it? I'll get better pics later!
Flossie is a leghorn & we have 3 other girls same age ,a wyandotte,ee,rice, 2 brahma I think will be a couple more wks.

 

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Geez auto correct sux! A rhode island red! Not rice!

 

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I have a question does her laying egg mean she can breed? I have seen Alfie walk up & peck her on the back! She didn't fight but did walk away after a few min. He did it yesterday too and seems to be staying closer to her than usual. Should I be concerned or is this normal behavior?