Hi, I made my introduction here: https://www.backyardchickens.com/t/636863/vermont-hellos#post_8554694 and am having problems with my new birds. They were laying well, between 2 and 3 eggs for the first 10 days that I had them and it progressively slowed, and now has entirely stopped for about 2 weeks. I was questioning the wood chips that I put into the coop, a mix of Black Walnut, Larch, Pine and Cherry, so I switched that out yesterday to a Pine / White Oak mix (I have access to whatever my friend at the mill has been using). As for their temperament, they are spritely and vital, lots of running around (free range) and are eating okay, not quite as voraciously as when I first got them. Maybe a little weight loss. Drinking yes. No broodiness. Poops are all good. They spend an inordinate amount of time under a Pine tree off of my driveway, as I write this I look out my window and see them all there happily scratching at god knows what. Any idea on what could cause the drop off to what appear to be totally active healthy birds?