First egg is hatching, but Mama Hen is off the nest....

[AYoung90]

My hen has been sitting on eggs for 21 days, & the first egg has pipped, but she's off the nest!! Is that normal? She had been leaving the nest once or twice a day (which I know normal), but is it okay now that that one has pipped? Should I go get her & put her back?

 

[sourland]

Just monitor to make sure that she goes back on her own.