We have been letting our chickens free range much more lately and as a result the last few days two of our hens have layed in different areas of the yard. One in particular lays in a bush and so I have kept them contained to the run and coop all day yesterday and this morning. Yesterday there were no eggs in the nest box and first thing this morning I found an egg in the run. The hen who likes laying in the bush was desperate to get out of the run this morning to get to the bush, I let her out and she immediately ran for that spot and layed an egg within minutes. Is there a reason they are refusing the nest boxes now? Should I just keep them contained to the run and coop for a while until they start laying in there again?