Hey, we are here in southern Ontario and we have 4 hens. One of our girls won't leave the coop. The other three will venture but not Lavern. She is the oldest of the four and was laying before we got her (two eggs). I understand why she may not be laying but am concerned she is not getting the necessary exercise. Should we kick her out for an hour or so. The temps are in the plus and here in Ontario the weather is relatively nice. What should I do?