I have 30+ birds and normally get 12 - 18 eggs a day. For the last week have only been getting 4 - 6. We have been experiencing a heatwave/humidity here in NJ for the last month, but now the weather is much better. However they still aren't laying well. The only thing I can think of is that its time to clean the coop, its starting to get stinky. Any other thoughts?