We had a flock of chickens we recently split up due to sharing half the flock with my dad. (which long story short ended up being more roosters then hens; we gave away the roosters to good homes) My dad had his half of the flock for a couple weeks and now after discovering and then giving away the roosters he had only one hen left and would like to return her to us. Which we are very happy to take her back. All of these hens were together since born, separated at 5 months of age for a couple weeks and I would like to know how to properly reintroduce them. Thank you in advance!