I found a picture of a feeding station on p34 of this months (August/September) edition of Backyard Poultry magazine. It is a free choice feeder with compartments for, what I can determine, four different types of nutrients; grit, calcium, phosphorus, and kelp. I would use the compartments for what I feel my flock needs. I was wondering if anyone had a source for this type of feeder. I would like to buy it pre-made however design plans would work for me too. Has anyone seen anything like this? I would also like it made of wood in a perfect world. Any help would be most appreciated.