We have been incredibly lucky with our hens...and birds in general!
DH has been checking the security camera we have in the hut where these two decided to brood...it is just a 4x4 structure with two levels we call 'the condo'. It is attached to the run and has pop doors for the birds to just use it as a hangout, sometimes they do lay eggs in the hay we piled in there for them and now these two decided it looked like a good spot to brood. DH says some of the other hens have been going in to visit and investigate the new additions....kinda looks like visiting hours at the maternity ward! LOL